GARDENING TIPS FOR SONOMA COUNTY
We are fortunate to have many different micro climates here in Sonoma County. The following are some helpful gardening tips and planting information. In order to be most helpful I keep the information general. Keep in mind that when suggesting plants and planting times they are basically for the Santa Rosa area.
- Mary
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2010 Gardening Tips
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| May |
Gardening Tasks for May
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| April |
Gardening Tasks for April
plus What to Plant |
| March |
Bees and Yellow Jackets
plus Things to Do in the Garden and What to Plant |
| February |
Gardening Tasks for February
plus What to Plant |
| January |
Gardening Tasks for January
plus What to Plant |
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2009 Gardening Tips
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| December |
I Have a Black Thumb; I Kill Everything
plus Things to Do in the Garden |
| November |
Lonely Tools
plus Things to Do in the Garden |
| October |
To Fertilize or Not to Fertilize |
| September |
“Help! My Container Plants Look Terrible”
plus What to Plant in September |
| August |
Be Careful Out There
plus Things to Do in the Garden |
| July |
Annuals and the Best Use of Your Money |
| June |
Keeping Plants Alive Until You Plant Them
plus What to Plant in June |
| May |
Weeds
plus What to Plant in May |
| April |
Irrigation Systems
plus What to Plant in April |
| March |
Mulch
plus What to Plant in March |
| February |
Pruning Roses
plus What to Plant in February
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| January |
Tools |
GARDENING TASKS FOR MAY
- After their flowers fade, you can prune spring flowering shrubs such as Lilac, Rhododendron, Azalea, Camellia, Forsythia, Ribes, and Flowering Almond. If you would like to improve your confidence for pruning contact Mary for an appointment.
- We ask a lot of our plants. Here in our Mediterranean climate we experience approximately six months of rain followed by six months of drought. Our climate also has six months of frost followed by six months of no frost. This time of year it’s super important to flush irrigation lines and check all emitters so that your plants will be happy throughout our hot/dry summer.
- Hold yourself back from buying those beguiling cool season annuals such as pansies. Now is the time to plant warm season annuals such as zinnias, cosmos, lobelia, and marigolds. Of course if you are just looking for quick color for a party pansies planted in containers would be perfect for you.
- After the flowers of Camellia, Rhododendron, and Azalea fade, fertilize with an acid fertilizer so they get a good start on the year it takes for them to form next year’s flowers!
- Weeds!
- Gardenias appreciate regular fertilizing to keep flowering throughout the growing season. Use an acid fertilizer once a month for in ground plants and every two weeks (at half strength) for container plants.
- Blueberries will appreciate some acid fertilizer this month too! Blueberries are great for large containers.
- Speaking of containers remember to mulch your container plants.
- Ferns-if you have not pruned out the old fronds from your ferns do it now. Follow all the dead fronds down to the base of the stem and cut out entire frond; being careful not to cut the new growth.
- Fruit trees-although there is a natural thinning of fruit in nature referred to as “June drop”, it’s still a good idea to thin fruits a little before June drop. After June drop you can thin some more. The most important reason for thinning fruit is to lessen the weight on the branch so that you do not come out to your garden one morning and see an entire branch on the ground and a big gaping wound in your fruit tree. The other reason is to encourage bigger fruit!
- Control ants with bait. When you see ants crawling up and down your fruit trees, ornamental shrubs and other plants this is a sign that your plants may be infested with aphid or other piercing, sucking insects. First, control the ant population. Then wash off the aphids with a strong stream of water. If the infestation is still heavy use insecticidal soap (remember the follow up spray-follow directions on the bottle). Sometimes, if you control the ants, the beneficial insects will show up to control those aphids for you.
- If you like the look of Azaleas, consider purchasing some California native Mimulus (Monkey Flower) that are better suited to our climate. The flowers of Mimulus are amazing! Each Mimulus has different water needs so be sure to ask your local nursery professional what your Mimulus needs.
- Avoid wasting water- your lawn needs water when you walk on it and the blades do not spring back up. Now is a good time to have your lawn aerated. Call Mary 545-6863 if you would like a referral to a lawn professional.
- Remember to water your roses. At the demonstration garden we are already watering the plants. The soil dried up so fast this year even after all that rain!
- Do you like Nasturtiums? Now is the time to plant your seeds or seedlings of Tropaeolum (Nasturtium). Remember that once you have established your plants you can start to hold back on the water. Watering Tropaeolums less creates more flowers. Watering more creates bigger leaves and fewer flowers.
May is a great time to sit outside and enjoy your garden, remember that book you’ve been meaning to read?
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GARDENING TASKS FOR APRIL
- Weeding continues to be one of the most important tasks to do in the garden.
- Mulching is also high on the list of gardening tasks.
- Flush your drip-irrigation system and check that all emitters are working properly. If you have too many emitters to check them all, keep a close eye on your plants throughout the season. By noticing changes in your plants early you can usually save a water starved plant before it dies by fixing the emitter problem.
- We are at the end of our ‘cool season’ and we are entering the ‘warm season’. Pansies, Iceland poppies, sweet peas, and calendula (among others) are ‘cool season’ annuals. If you need quick color for a party go ahead and plant some pansies; however, if you want color in your garden throughout the summer plant ‘warm season’ annuals.
- Now is the time to start planting your ‘warm season’ annuals such as, Brachyscome iberidifolia (Swan River Daisy), Celosia (Cockscomb), Cosmos, Lobelia, and Salpiglossis sinuate (painted tongue). If your garden tends to get frost, plant towards the end of the month.
- Protect plants (especially vulnerable new plantings) from snails, slugs, earwigs, and sowbugs.
- You may be eager to plant your tomato starts but remember that tomatoes are ‘warm season annuals’ here in Sonoma County. Generally our frost dates are from Halloween to tax day (April 15). Here in the demo garden we can get hard frost as late as the first week in May! Just to be safe, I plant my tomato starts the second week in May. If your garden tends to be frost free it may be safe for you to plant your starts this month.
- Now that the soil is not as saturated it’s time to plant your Dahlia tubers. Dahlias like a rich, well draining soil. If your soil is not well draining, amend the soil with some good compost several weeks before planting. Also, if the mature size of you Dahlia is tall place the stake just to the side of you tuber when you plant.
- Remember, when you shop for your plants this season, we are fortunate to have many small nurseries from which to choose. Many times the selection and quality are better than the larger stores.
- Did you set out your yellow jacket trap yet? If you entertain outside in the summer now is the time to set out your trap.
- Watch for ants climbing up the trucks of plants (especially shrubs and trees). Ants are usually a sign that you have some yummy aphids, scale, or other insects that the ants use for a honeydew food source. Controlling ants with bait or barrier products is preferred over spraying. Consider what pets are in your yard when deciding how to control ants.
Need help? Contact Mary to schedule an appointment!
Planting Suggestions for April:
- Remember, in our climate it is best to plant trees, shrubs and many other frost tolerant plants in the fall!
- Perennial plants-Coreopsis, Bergenia, Campanula portenschlagiana, Salvia (some are frost sensitive, plant those later)
- Warm season annual plants-Lobelia, Cosmos, Cleome, Impatiens and Coleus (both later in month)
- Veggie seeds-early corn, eggplant and cucumber can be planted later in the month. Carrot, beet and turnip anytime this month
- Veggie Plants-cauliflower, lettuce, parsnip, bush snap beans
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BEES AND YELLOW JACKETS
Let’s talk about bees and yellow jackets before their active season really gets going.
I love bees! I like to quietly sneak up behind them and pet their little bee backs! That said I understand that not everyone shares my enjoyment of bees. Respecting bees and their importance in our world is a different story however.
We all need to respect bees and other pollinators in order for them to thrive and pollinate all those flowers so we can eat! Both bees and yellow jackets can be helpful friends of the garden. Paper Wasp yellow jackets eat insects and other garden pests. In the demo garden, I watch the Blue jays hover under the roofline and pluck the yellow jackets from their nests (the circle of life).
Understanding the difference between bees and yellow jackets will help you decide how to manage any possible problems. Sometimes there is no need to do anything but other times you may need to set traps or call for help. It’s about balance. Know what you are dealing with before automatically spraying poisons.
Beginning around the first week in March and ending around June is swarm season for honeybees (they are looking for a new home). If you have a swarm of bees that choose an inappropriate area of your property to set up shop please go to www.sonomabees.org and accept the help of the volunteers who can come collect the swarm (depending on your situation you may be charged a fee). When you call please be ready to answer questions such as ‘how long has the swarm been there’, ‘in relation to the size of a sports ball how big is the swarm’, ‘in relation to your roofline how high up is the swarm’, etc.
If you entertain outside, this is the time to set out yellow jacket traps. Placed early in the season (about one trap per acre) you have a good chance of catching the queen and therefore decreasing the amount of yellow- jackets near your picnic areas. There is only a small window of time that the queen is flying about so do not put off placing your traps until summer.
When you are outside and you feel something that feels like a bb pellet hit you be aware that this ‘hit’ may be a warning sentry yellow jacket or bee telling you to stay away. Get out of the area quickly and assess the situation from afar!
For more information check out “Yellow Jackets and Other Social Wasps” at http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7450.html
Things to Do in the Garden:
- Plan on checking your drip irrigation system in the next month or so. Flush the lines, check for leaks, check all emitters.
- Fertilize your roses starting around the middle of this month. I have had wonderful results with EB Stone Rose and Flower food but there are several organic fertilizers from which to choose.
- Apply a rich compost mulch around your roses instead of a chunky bark where insects and fungal diseases love to hide.
- Clematis can be fertilized now as well as pruned in some cases. If you feel confused by what your plants need perhaps it’s time to make an appointment with The Gardening Tutor.
- Treat yourself to a new pair of good quality bypass pruners such as Felcos. Keep them clean and sharp and they will last for years!
- Buddleja (Butterfly Bush) blooms best on new growth. Once your buddleja starts its spring growth in earnest you can prune it. I prune mine down to one and a half feet from the ground each year to keep it to 8 feet or so. You can choose which height works for you. Prune out some of the oldest stems to the ground in order to make room for new shoots.
- Are you planning on planting a vine to cover an outdoor eating area? When deciding which vine to plant consider when it blooms. If you plan on eating under that vine do you want to share that space with bees and wasps working those flowers in the summer or would you like the vine to bloom in winter or early spring when you can enjoy the flowers from inside your warm house. Also, when choosing any vine consider how quickly it grows. Here are a few vines to consider:
- Clematis montana-Early spring Blooming/ fast growing/deciduous
- Clematis armandii-early to mid spring/fragrant white flowers/evergreen/slow to start growing but after established spreads 15 to 20 feet
- Clytostoma callistegioides-late spring/violet trumpet flowers/slow to moderate grower easy to direct
- Remember to make some time for hand weeding, even ten minutes will help. Looking out at your garden full of weeds can be daunting. In the demo garden, this time of year my most time consuming task is hand weeding. I understand how overwhelming the weeds can feel. Keeping your garden thickly mulched or sheet mulching will help with this ongoing battle.
- Pansies love cold weather! Run out to your local nursery today and pick up some Pansies and other violas for adding instant color to your cold, wet garden. Protect from snails, slug, earwigs and sowbugs and keep deadheading. I plant my pansies in November. By March they have filled in nicely and are blooming profusely!
- If you are looking for the unusual and cannot find it at your local nursery visit Annie’s Annuals. Annie has lots of interesting plants and her mail order service is outstanding! The plants arrive in excellent condition ready to plant right away!
- Did you know: Sebastopol has the highest concentration of bees in Sonoma County!
Planting Suggestions for March:
- Veggies-Beets, Carrots, Fava beans, Leeks, Lettuce, Peas, Radish, Potato tubers
- Annuals-Pansies, ornamental poppies
- Start looking for summer flowering bulbs such as Dahlia and Gladiolus
FEBRUARY
GARDENING TASKS FOR FEBRUARY
- February is a good time to shop locally owned nurseries for deciduous Magnolia trees. It’s always a good idea to see a plant in bloom at the nursery so you can get just the color that pleases you.
- In between the rain storms (if your soil has drained enough) get a handle on all those weeds you see growing out there. The OXO weeder is a great tool to help you remove the tap root and all!
- When you need to remove weeds from around your seedlings or root vegetables try snipping the weeds out with the Deluxe Snips instead of pulling them out. Pulling out the weeds that are that close to your other plants can disturb the roots or even pull out your seedlings.
- Also, if you have large swaths of weeds you can always sheet mulch. Put a layer of cardboard or many newspaper sheets right on top of the weeds (make sure to overlap by six inches or so) and then apply a thick layer of mulch on top. In a few months when you get to planting, most weeds will be gone.
- Petal blight can affect Camellias. If all of your Camellia blossoms turn blotchy brown soon after opening you more than likely are dealing with this fungal disease. The best plan of action is to remove all the blotchy blossoms and throw them in the trash. Also, keep the area around and under the plant clean of debris. In the demonstration garden, I had to remove every single blossom and I also replaced about two inches of the top soil under my Camellia. I kept the whole area clean and repeated this for two bloom seasons. Today it looks like my Camellia is healthy once again!
- Before your fruit trees and roses leaf out you can still get in that dormant spray to kill overwintering insect and fungal pests.
- Finish up rose pruning.
- Many fruit trees can be pruned in the summer. You can especially wait until summer to prune the ‘stone fruits’ such as, nectarine, peach, cherry and other fruits that have a pit, in order to lessen the chances for disease. Pear trees are another fruit tree to prune in summer to help lessen fire blight infection.
- Magnolias will start flowering this month. In general “Tulip” Magnolias are pruned for shape in the summer.
- Acers (Japanese Maples) usually need little pruning except for shape and to remove dead, diseased or damaged limbs. Prune Acers in July.
Planting Suggestions for February:
- Looking for evergreen shrubs for large containers?
Look for Camellia, Podocarpus, Pieris japonica, Sarcococca, Dodonaea, Rhododendron, or Daphne in your local nursery.
- It’s still bare root season. Make a point to get to the nursery early so you have plenty of bare root roses, fruit trees, blueberries, and cane fruit from which to choose. Waiting too long may mean the roots have been compromised.
JANUARY
GARDENING TASKS FOR JANUARY
- Some local nurseries have gone out of business! Grab a hot beverage and head on out to your locally owned nursery to see what is in bloom this time of year. You’ll be surprised!
- You can start pruning your roses this month.
- In order to kill overwintering pests and fungal spores it’s time to dormant oil spray your roses and dormant fruit trees. There are many products from which to choose; I use Neem oil on my roses.
- Continue to use an antitranspirant such as Cloud Cover every 6 weeks or so on your citrus and other shiny leaved plants that are vulnerable to frost damage. Be sure to spray underside of leaves too.
- If you are not using your raised vegetable beds this winter cover the soil with a nice thick layer of compost mulch.
- When planting bare-root plants: soak the roots in a bucket of water for a few hours before planting.
- Keep your pruners holstered around Lilac, Forsythia, Rhododendron, Azalea, and other plants that bloom in early spring. Pruning spring flowering plants now means little or no flowers until spring 2011!
- Continue to protect your little sweet pea plants from pests. You can still plant sweet pea seeds if you missed planting in November.
- Do not cut back damaged plant parts from frost damaged plants. It is best to leave the more frost tender plants such as Lantana, Citrus, and Salvias alone until new growth starts in springtime.
- You can still plant wildflower seeds. Make sure to first clear all weeds from the planting area.
- Now is the time to start pruning your dormant fruit trees such as Apple. Other than to clear out crossing, dead, damaged or diseased areas, Persimmons and Figs generally do not need much pruning.
Planting Suggestions for January:
Bare-root deciduous fruit trees, blueberries, cane berries, rhubarb
Daphne
Cyclamen, Pansies, Calendula, Primrose, Sweet Alyssum, Iceland Poppies
’I HAVE A BLACK THUMB; I KILL EVERYTHING”
As The Gardening Tutor I often hear people say that they feel they have a “black thumb” or that they “kill everything”. I understand and I remember exactly how defeated I felt when everything I planted died.
Before I knew anything about how to establish plants I lived atop a rocky hill in the country. This plot of land had nothing but weeds growing on it and I really wanted to see flowers. So one day, I picked up a few flats of ice plant and taking my life in my hands I climbed onto the steep hillside out in front of the house. Patiently I chiseled little holes in the dry, rocky soil and with great hope I planted the little plugs of ice plant (did I mention this was in the heat of the summer?). This endeavor took the better part of my day. When I was done, the hillside was a polka dot design of little plants that I thought would quickly fill in and be a waterfall of color when they bloomed their hot pink flowers. Within days all the little plants were crispy brown and dead! So sad.
Another time, before I knew about how fertilizers work, I had five beautiful hanging baskets full of fuchsias and other plants. I had heard that plants in containers needed fertilizer so one day I mixed up some liquid fertilizer and poured it in each container. Later when I went outside I noticed the plants looked terrible. What happened? They all died because the soil in the containers was dry when I added the fertilizer.
As you can see we all start at the same place. No one is born knowing how to make plants thrive. Perhaps your “black thumb” is just dormant. Once you learn what to do with and for your plants you too may have a “green thumb”! At the very least you will feel more confident about your gardening endeavors.
When you are ready to try gardening again or for the first time contact The Gardening Tutor for your first appointment.
Things to Do in the Garden:
- Near the end of December bare root season begins. Be on the lookout for bare root fruit trees and roses.
- Protect frost tender plants with frost protection cloth. For some plants, such as Citrus you can use an antitranspirant such as Cloud Cover.
- Prune Wisteria vines. Shorten the laterals to two or three fat buds.
- Remember to check your plants that grow close to your home and outbuildings. If the overhang keeps the rain from reaching these plants you will need to give them some winter irrigation.
- December is the time to start some of your dormant spraying on your deciduous plants, such as some fruit trees and roses. Dormant sprays kill overwintering insect eggs as well as fungal spores. Wait until the plants have lost their leaves. If the plants still have a few leaves on them when you are ready to spray, remove the leaves before spraying. Remember to spray the soil underneath the plant too.
- Leaving old fruit on the soil under your fruit trees encourages insect and disease activity.
- If you have bark under your roses consider replacing the bark with nutritious compost mulch. Slowly decomposing bark or other such mulch is the perfect place for fungal and insect pathogens to live and keep infecting your plants.
- Continue to remove weeds from the garden.
- Do not work soil that is too wet. Wait a few days after a rain to do your weeding, bulb planting, or other tasks that disturb the soil.
- When inside your house look outside the windows and envision places in your garden where you could place a focal point plant. If you choose a flowering plant that compliments the colors inside your home you create the feeling of a larger room.
Have you looked at your gardening tools lately? This may be a good time to take a few minutes and survey your tool stash. Toss the tools that are broken beyond repair and clean up the rest of your tools to get them in good working condition. There are great “Tools” tips in January’s monthly tips.
There’s nothing like using the right tool for the job, just ask any professional tradesperson. If you have ever used the wrong size lopper when you should have used a pruning saw, you know having the right tool makes the job easier on you, the tool, and the plant.
If you have hand pruners consider buying a leather holster to hold your pruners on your side while gardening. I often see people toss their pruners on the soil. There are a few reasons why one might reconsider tossing one’s pruners: soil can have disease spreading pathogens in it and each time the pruners lie in the soil there is a good chance these pathogens can take a ride onto the next plant you prune thereby spreading the disease; the constant impact with the ground is hard on the tool; it is easy to lose your tool when it’s not at your side.
There are pruner holsters that slide onto your belt but I like to use a holster that hooks onto my pants pocket. With my pocket being lower than my belt, it’s easier on my shoulder if I don’t have to reach up as high and the hook type quickly comes off when I’m done in the garden.
You can find several of the tools that The Gardening Tutor uses at The Garden Shoppe but there are two tools that I cannot do without that you will not find in The Shoppe. One is my short handled military shovel (from a surplus store) and the other is my spading fork.
The best advice when looking for tools is to purchase the best that you can afford.
Feel free to contact Mary to see what tips she may have to help you choose the best tool. Even better, make an appointment and take The Gardening Tutor with you as your personal shopper so that the two of you can look over the tools together.
Things to Do in the Garden:
- If you enjoy sweet pea flowers in spring now is the perfect time to plant your sweet pea seeds. Remember to dig in plenty of composted material into the soil and cultivate deeply. The Gardening Tutor orders her seeds from Enchanted Sweet Peas.
- Finish planting perennials, trees, shrubs and native plants.
- Continue to plant your cool season annuals such as Pansies, Iceland Poppies, Calendula, and Primroses.
- When buying Pansies: Look for plants that are full of green growth with only enough flowers to ensure that you are buying the color you desire. Refrain from buying plants that have stretched. If you do purchase plants that have lots of flowers cut off all the open flowers (including stems) when you plant the plants. This deadheading will stimulate root growth and within no time your little plant will have flowers again!
- For months of flowers, deadhead your annual plants (spent flowers and the stem) at least weekly throughout the growing season.
TO FERTILIZE OR NOT TO FERTILIZE
Reminder! This is “Plantapalooza” time in Sonoma County:
October is the best time to plant many of our trees, shrubs, perennials and native plants! The winter rains will help these new plantings to establish their root systems. Plant bare-root plants in winter and save springtime for planting the more frost tender plants.
Now that the summer is drawing to a close I notice that people want to be out in their yards fertilizing all the plants. If your plants look unhealthy, check the soil first to make sure it’s not a watering problem (too much or not enough) that is making your plants look sickly. Adjusting the amount of water you apply may be better than applying a fertilizer.
We are entering our six months of cool/wet weather here in Sonoma County; fertilizing now will encourage green growth that may not have time to harden off before damaging low temperatures and frost arrive. Our frost dates for the Sonoma County area are generally between Halloween (October 31st) and tax day (April 15th). At this time of year, your garden will be happier if you direct your energies into applying at least a 3 inch layer of mulch on top of the soil. Applying good compost mulch will feed the soil (and therefore your plants), protect the soil from erosion, suppress weeds, and give extra protection to frost tender plants.
Earlier in the month, you can still apply a 0-10-10 fertilizer to you Camellias, Rhododendrons, and Azaleas to help form healthy flower buds. Make sure the first number on the fertilizer package is “0” which means that it has no green growth stimulating nitrogen in the formula.
Also, remember it takes time to see the results of fertilization. Over fertilizing encourages weak stems and too much growth that attracts more insects to that succulent new growth!
Things to Do in the Garden:
- Mulch, mulch, mulch…remember to mulch containers too
- Keep up with weeding. When the rains come, the annual weed seeds will sprout and will try to overtake your new plantings
- There is still time to plant your veggie starts and some seeds for a winter veggie garden!
- Leave the seed heads of Amaranthus, Monarda, Echinacea, to feed the birds this winter
- Clean up all the fallen fruit from under fruit trees to discourage critters and insects
- When the weather turns cool start planting your cool season annuals such as Iceland Poppies and Pansies. Keep plants watered until the rains arrive in earnest.
- Protect newly planted annuals and other plants from snails, slugs, earwigs and sowbugs
- Hold off pruning Lilac, Rhododendron, Forsythia, Camellia and other spring blooming shrubs until after they flower in spring
- Leave most ornamental grasses uncut for winter interest.
- Divide most overcrowded perennials-compost or share with friends
Some planting suggestions for October:
- California Natives-Mimulus (Monkey Flower), Sisyrinchium californicum (Yellow-eyed grass), Pacific Coast Iris
- Veggie Starts: Snap peas, Swiss Chard, Bok Choy (great cut in half and grilled), Brussels sprouts
- Veggie Seeds: Beets, Lettuce, Carrot, Radishes. Spread out the planting times so you can harvest for a longer period of time.
- Annuals: Primula malacoides (not all primrose are alike, check this one out), Iceland Poppies, Pansies, Violas,
- Bulbs etc: Freesia, ranunculus, anemones. If you like Dicentra (Bleeding Heart) start looking for the dormant roots in the nursery
- If you desire some fall color in your garden start shopping now for shrubs with fall color such as Hydrangea quercifolia (Oakleaf Hydrangea)
“HELP! MY CONTAINER PLANTS LOOK TERRIBLE”
There are many tips and tricks to creating beautiful container plantings but this month I am going to focus on some basics so you can feel a little more confident in your ability to have healthy, happy plants in containers.
I am not talking about water garden plants or cactus type plants. I am talking about plants that prefer well draining soil and prefer to have that soil continually moist but not soggy.
The following are a few of the suggested things you can do if your plants are not looking well:
- First, get into the soil medium. Dig down in there a few inches and check to see how moist or dry the root zone (where most of the roots are growing) feels.
- If the soil in your container has dried out, the best way to moisten the soil again is to slowly add the water. You can stand there all day pouring copious amounts of water on the surface of the soil and it will probably not penetrate into the root zone. To add the water slowly, either turn the hose on a trickle and place on the soil surface or use one gallon water bottles (with a small hole punched at one edge of the bottom).
- Some bagged potting “soils” have peat moss in them. Once the peat moss dries out it can be hard to remoisten. Follow the steps for slowly moistening the soil or you may want to replant your container using a mix without peat in it. I use Grab n Grow’s Landscape Planters mix for my larger containers and Nursery Planters Mix for my smaller containers. I do not put anything in the bottom of my containers such as rocks or broken clay pots.
- Always apply fertilizer to moist soil. Many container plantings appreciate a weekly or bi-monthly application of half strength liquid fertilizer. My plants respond very well to Maxsea (a seaweed derived plant food).
- If the soil is too moist perhaps your plants are drowning. The hole at the bottom of the container may be plugged (poke a stick in there to open up the drainage). To create better drainage, perhaps your container needs to be raised up slightly from the surface it is sitting on. See the Pot Pads in the Garden Shoppe.
- Check for possible pests. If the soil seems to be well moistened perhaps there are pests sending your plant into decline. Make sure to check for pests under the foliage as well as on top.
- Controlling ants with bait traps will help to keep some pests populations down. If you see ants crawling up the stems and branches of your plants, control the ants before, or in addition to, tackling the pests. Also, ants are generally a sign that the soil has dried out.
- To get ahead of possible problems with your container plants, at least give them a glance each day. If you are paying attention, the look of your plants can tell you when they are not happy in plenty of time for you to correct the problem.
Some Planting Suggestions for September
- Veggie Seeds: Beets, Spinach, Radish, Peas
- Spring Flowering Bulbs: Start looking in the nurseries for spring flowering bulbs, such as Freesias, Anemones, Daffodils, and Crocus
- Annual Plants: Start planning where you will plant your cool season annuals, such as Pansies, Iceland Poppies, and Calendula that you will plant in October/November. Also start thinking about where you will prepare and plant your wildflower seeds and Sweet Pea seeds in November.
BE CAREFUL OUT THERE
This time of year many of us are inspired to pick up our pruners and get out into the garden. Before you start pruning your thorny plants you may want to keep a few things in mind.
Getting pricked or scraped by such plants as rose, citrus, palm, blackberry or other plants with thorns can open up our body to bacterial infection such as Cellulitis or Tetanus. Bacteria are everywhere (some “good” some “bad”). The tetanus bacteria live in soil and manure. Worst case scenario, tetanus can lead to lockjaw (rare) and a case of Cellulitis can land you in the hospital on intravenous antibiotics (not so rare). There is nothing you can do about where the bacteria live but there are precautions you can take when gardening.
Help prevent infection by keeping up on your 10 year booster shot for Tetanus and wearing good garden gloves (especially gloves that have leather that covers your forearms). Also, wear a hat when pruning. Needless to say, safety glasses are always a good idea.
If you do get a scrape or puncture wound, immediately wash the wound with soap and water. Many times I do not have soap and water available to me when I am working so I use the alcohol and antibacterial ointment that I carry with me. As soon as I get home I wash the wound with soap and water.
Things to do in the garden
- Keep up the weeding.
- Shear or prune Achillea (Yarrow) to about 2 inches from the ground. If you prune out the spent flower stocks you can prune closer to the ground. If you shear, your patch of yarrow may look unsightly for a few weeks but it will come back.
- To encourage more blooms, continue to deadhead perennials and summer annuals such as Cosmos, Coreopsis, Dahlia, Fuchsia, Salvias and Zinnias.
- Prune most of your roses to encourage a good fall season show.
- Fertilize roses. In general, August is the last fertilizing for the season.
- Keep area under and around roses clean of leaf and petal debris.
- Prune non-everbearing berry vines after harvest.
- Lemon Verbena may appreciate being pruned back now to encourage fresh new growth.
- To keep spider mite populations down, wash shrub foliage down with a strong spray of water once or twice a month (daily washing may encourage fungal infections). Also, keep plants looking good by using a metal shrub rake to rake through the fine webbing of spider mites.
- Keep the area under and around fruit trees free of fallen fruit so as not to attract insects.
- Mulch where needed.
- Read a book.
- Sip lemonade or iced tea.
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ANNUALS AND THE BEST USE OF YOUR MONEY
Have you ever purchased six-packs or 4 inch containers of Pansies at this time of year? You planted them and then they quickly died. If you have, you are not alone. Even though Viola x wittrockiana (Pansies) are a “cool season annual” nurseries offer them at this time of year because people want them. A better choice when the weather warms would be to plant “warm season annuals” such as Zinnia, Lobelia erinus, Celosia (Cockscomb), Cleome hasslerana (Spider flower), Petunia, Lobularia maritime (Sweet alyssum), Cosmos, and Tropaeolum majus (Nasturtium).
The life cycle of an annual plant is to bloom, be pollinated, create seeds and then die, but you can trick some of your annuals into blooming for many months by deadheading and/or shearing. Without deadheading, when you brought those Pansies home while they were full of blooms the plant thought that its job was done and “went to seed”.
In defense of the novice gardener, I have noticed that many of the gardening magazines feature Pansies in their summer issues; however, here in Sonoma County, Pansies are actually happier when they are planted when temperatures are cooling down in October or November. In our demonstration garden, I plant Pansies and other cool season annuals, such as Iceland Poppies, in the fall. Because the plants have had time to establish nice big root systems and I have regularly removed the spent flowers with the flower stems (deadheading) these cool season annuals are still blooming in July!
Here’s how to get your monies worth from your annuals
- Plant cool season annuals when temperatures start to cool off in the fall or winter.
- Plant warm season annuals when the temperatures start to warm up in April or May.
- Deadhead regularly (daily or weekly).
- Purchase plants with just enough bloom to make sure you have the color you desire.
- If you buy your annuals, such as Pansies in full bloom cut off most of the flowers when you plant them (this will encourage the roots to establish). Trust me, your plants will soon be full of blooms again.
- If the Lobelia plants you purchase are spindly or leggy when you buy them you can shear them to about two or three inches high and they will bush out again.
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KEEPING PLANTS ALIVE UNTIL YOU PLANT THEM
While at the nursery “Just to look” the pretty plants call to you to take them home. Once you get them home you have no idea where to plant them. You figure you will get to them tomorrow but tomorrow turns into next week. You finally have a minute and when you go outside the pretty plants are crispy/ limp or dead/dying. Take heart, we have all been there. Here are some suggestions for keeping your plants happy while they wait to be planted:
- As soon as you get your plants home water them and place them in a spot with light shade. Even if the tag states that they are “full sun” plants it will help to place them out of full sun while you find time to get back to them.
- Do what the nursery does. In the nursery, container plants are watered every day. Generally, the container size equals the amount of water needed. The smaller the container the more quickly they dry out. For instance, six packs and 4 inch containers may need to be watered more often on a sunny day with temperatures in the 90’s (morning and late afternoon) to keep them from drying out.
- When you are purchasing a specimen plant in a large container (5 gallon or larger) ask the nursery professional how often the plant is being watered.
- If your plants do end up drying out, water them slowly so that the water can saturate the soil. If you give them too much water too fast the water will just run off and the roots will remain dry.
- On the day of planting, water your plants well while they are still in the containers. This will make sure that the roots are well hydrated and ready to be planted.
- If the soil is dry when you are ready to plant make sure to water around the plant in the planting hole before you cover the hole with soil. This extra moisture in the planting hole will help keep the dry soil from leaching moisture from your newly planted root zone.
- After watering the newly planted area mulch around all your plants.
Sometimes you need to know when to let the plants go straight into the compost bin. It’s ok, keep the faith you’ll do better next time.
Planting Suggestions for June
- Annuals: Petunia, Marigold, Impatiens, Cleome (may need staking), Zinnia, Celosia
- Veggie Seeds: Lettuce, Radish, Carrot
- Veggie Plants: Lemon Cucumber (save space use trellis), Eggplant, Squash, Basil, Nasturtium (not a veggie but leaves and flowers are edible)
WEEDS!
Did you know that a weed seed can stay dormant in the soil for 100 years until something (the right amount of water, soil disturbance, fire or other change) starts the germination process? Yikes! Have you ever heard the adage ‘one year of seeds, seven years of weeds”? Am I trying to scare you? Perhaps.
Weeds steal the nutrients and water from the soil around your plants and trees. Some weeds can attract certain insect pests to your garden. The more you can keep ahead of the weeds, the healthier your plants will be. If you can eke out a piece of time to be in your garden and the garden is full of weeds, you may want to do some weeding instead of adding new plants. One way for me to get time alone is to do the dishes or go out and pull weeds; everyone seems to vaporize when I start these chores.
If there are too many weeds to pull by hand, at the very least go out and mow them down with the weed eater or lawn mower. Ideally this mowing is done before seeds are formed. If you missed this pre seed head time, after you mow the weeds down rake up the cuttings and remove them from your property. I have pulled a weed just before it went to seed and left it on the ground only to come back a few days later to see that the weed had gone to seed after I pulled it! If you are ahead of the seeds you can compost weeds such as dandelion; however, if you have Cynodon dactylon (Bermuda Grass) or other weeds that spread by underground rhizomes do not put them into your compost pile (remove these weeds from the property too).
Sometimes people use a rototiller to grind up the weeds to make it easier to remove them but if you chop up perennial weeds such as Bermuda Grass or Convolvulus arvensis (Bindweed) you will just spread the problem.
Things to do
- After weeding, see our OXO Weeder, apply a 3 inch layer of mulch on top of the soil in order to keep the sunlight from reaching the weed seeds and germinating them.
- Protect plants (especially young plants) from snails, slugs, earwigs, sow bugs and other garden pests.
- When you control pests in the least toxic way, birds will be able to come to your garden and help you keep the pests down.
- Spray aphids off plants with a firm shot of water from the hose. Hold your hand behind the foliage/buds while you shoot the aphids off.
If you leave the aphids for a little while, at the beginning of the season, there is a good chance that predator insects will come help you kill off the aphids. If the aphids persist, start with the water spray and then go to insecticidal soap (remember to do the follow-up spray).
Planting Suggestions for May
- Annuals: Salpiglossis (may need staking), Calibrachoa (Million Bells) grown as annual or perennial, Antirrhinum majus (Snapdragon), Alyssum, Sunflowers (seed or plants)
- Veggie Seeds: Beets, Corn, Eggplant, Lettuce
- Veggie Plants: Celery, Tomato, Brussels Sprouts, Peppers
IRRIGATION SYSTEMS
Although I wish it weren’t true, irrigation systems are interactive. Watering systems are not a chicken, you cannot just “set and forget” about your irrigation system even though we would all like to do just that.
Here are some tips to keep in mind when installing your own drip/spray system or when you hire someone else to install the system for you:
- Take photos of each zone of installed lines before covering the lines with mulch.
- Ask the installer to provide you with a detail of what type of emitters were used (1 gallon/hour etc.) and how many emitters are on each plant. If the installer charges for this service, pay the extra money. I promise you will appreciate the investment later when maintenance needs to be done and you have a map of what is under that mulch!
- Make sure that the watering zones are clearly marked on your control panel.
At least every spring (preferably more often) before you need your drip irrigation system take the time to do the following:
- Flush the system. Open the end of the line and turn on that zone for 30 seconds or so in order to flush out insects and debris that may have accumulated in the lines over time. If you have sandy soil, this is a good practice at least every season. Remember to reclose the main line.
- Turn on each zone one at a time and “walk the line”. Follow your main lines and observe where you see leaks, broken sprayers, and lines without emitters.
- As your plants mature, look for emitters that need to be moved farther away from the base of your plant. Keeping the irrigation delivery towards the edge of the plant roots will help to prevent root rot.
- Once “drought tolerant” plants have established in your garden you can change the amount of water they receive by deleting an emitter or changing the emitter to deliver less water.
Remember, in order to deliver the water that your plants need to thrive, it is generally better to run the drip system for a longer period of time (say, 1 to 2 hours) a few times a week, rather than in short intervals several times a week. Every system is different and that is where the interaction between you, your plants, and your irrigation system plays a vital role for a healthy and beautiful garden.
Planting Suggestions for April
- Annuals: Lobelia, Petunia, Ipomoea (Sweet Potato Vine)
- Veggie Seeds: Radish, Lettuce, Arugula
- Veggie Plants: Swiss Chard, Peas, Bush Beans
- Herbs: Parsley, Cilantro, Thyme, Chives
MARCH
MULCH
We are finally getting our much needed rain! If you have not already applied a layer of mulch to your garden, I encourage you to plan for this task in March. Now that the soil is saturated it’s a good idea to wait until we have a few days break in the rain, to allow the soil to dry a bit before applying mulch. Walking on saturated soil can really compact the soil and compromise the soil structure. When applying mulch in the rainy season, it’s a good idea to use some small pieces (2’ x 2’or so) of plywood or something for you to step on to disperse your weight over the soil surface in order to lessen the compaction. Make sure to keep the mulch approximately six inches from the base of plants.
Clients ask what the difference is between mulch and amendment. Basically, mulch is like placing a porous blanket on top of the soil and amendment is like feeding the soil by incorporating the amendment into the soil. Mulch can be just about anything that covers the soil including gravel, bark, and even cut up rubber tires but here I am talking about the benefits of compost mulch. Compost mulch can be used as both an amendment and mulch.
Here are some of the benefits of applying a 3” layer of compost mulch:
- To suppress and/or control weed growth
- Feeds the soil (which feeds your plants) so you can use less fertilizer
- Protects the soil from erosion
- Attracts earth worms and other beneficial soil organisms
- Aesthetically pleasing to the eye, gives a sense of cohesion to your garden
- Keeps soil warmer in winter and cooler in summer
- Slows water evaporation from the soil so you can water your plants less
- Keeps soil born disease organisms from splashing up onto your plants
We are so fortunate in this area that we have local suppliers who mix their own mulch so that we can buy in bulk and save money. A 10’ by 10’ area of your garden spread with a 3” layer of mulch takes approximately one cubic yard of material. There are 27 cubic feet in a cubic yard of material. When you buy your compost by the 1.5 cubic feet bag that means you need to buy 18 bags to equal a cubic yard. If the compost is $10.00 a bag you will spend $180.00 for a yard of compost compared to buying in bulk, which can vary from approximately $19.00 to $40.00 a yard. Sometimes it makes sense to buy bags; however, when you are ready to buy in bulk call or email The Gardening Tutor to hear about our new hauling service.
Planting Suggestions for March
- Annuals: Bellis perennis (English Daisy), Iceland Poppies, Pansies, Stock, Snapdragon
- Veggie Plants: Broccoli and Cabbage
- Veggie Seeds: Carrot, Parsnip, Peas, Swiss Chard, Turnip, Beets
- Veggie Tubers: Potato
- Start looking for summer flowering bulbs, such as Gladiolus at your local nursery!
FEBRUARY
PRUNING ROSES
The question I hear most often this time of year is, “How do I prune my roses?” Here in the Santa Rosa area there is still time to prune your roses.
One of the most helpful tasks you can do to keep your roses healthy is to keep the area below and around the roses clean of leaves. Diseases such as rust, powdery mildew and black spot are fungal diseases that spead easily. To remind you of why you would want to keep the area cleaned up, it may be helpful to think of this leaf debris as similar to athlete’s foot fungus. Before you prune, gently strip off all the leaves and thoroughly rake the area. Striping the leaves first will help you to clearly see which stems you are pruning.
Different types of roses prefer different pruning but here are some general things to keep in mind. Angle your pruning cuts away from the bud so that any water will run away from the bud. Prune a quarter inch above an outward facing bud (or to a bud that is going to grow in the direction you would like). Cut out any spindly growth (growth that is less than the diameter of a pencil). Prune out any growth that will be growing into the middle of the rose so that the rose bush will have good air circulation. Good air circulation will cut down on the possibility of diseases. Also, prune out any dead, diseased, or damaged growth. Where branches cross, decide which branch to keep and prune out the other branch.
After you prune and clean up the area, apply a 3" layer of good quality mulch on top of the soil to help reduce weeds and feed your roses. Keep the mulch about 6 inches from the base of the plant.
Planting Suggestions for February
- Bare root roses
- Bare root fruit trees
- Annual plants such as pansies, cyclamen, Iceland poppies and primroses
- Veggie seeds such as beets, lettuce, and carrot as well as onion sets
JANUARY
TOOLS
This is a great time of year for cleaning and sharpening your gardening tools!
For shovels, hoes, trowels etc. use a stiff brush and wash the entire tool with mild soap and water (you can add a little bleach to the water if you like). After the tool is clean, dry it completely with a clean cloth. Sharpen any cutting edges. Lightly oil any wooden handles with boiled linseed oil or a vegetable oil; you may first need to use some sandpaper to smooth rough spots in the wood.
The blades of hand pruners and loppers are easily cleaned of rust and residue with 000 steel wool. Sharpen the blades. You can then lightly spray the blades with alcohol and then lightly oil with sewing machine oil. Help your hands and your plants; clean and sharpen your pruners as often as needed to make good clean cuts using the least effort.
One of the best ways to care for your tools is to store them out of the weather and hang them so the tools do not rest on their working ends.
Remember to always buy the best quality tool that you can afford.
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