Vegetable Tips for Late Winter

albrightsouza_chardNow's the time to plant  cool season vegetables from starts or seed like chard, snow or shelling peas, spinach, bok choy, broccoli, cauliflower, cabbage, kale, lettuce, mustard and onions.  You can also sow seeds of beets, radish and carrots directly in the ground. Inside it's time to start your warm season vegetable seeds such as tomatoes as well as eggplant and peppers.  Usually you start them inside about 8 weeks before last spring frost. Counting back 6 weeks from when night temperatures stay in the mid 50 degree range also works to figure out when to start.

For those who enjoy container gardening, try combining some colorful chard with parsley, alyssum and some Johnny-jump-ups. In another large pot grow some kale, spinach along with Windowbox sweet peas. All stay compact and you can harvest healthy greens close to the kitchen door.
 

Zones in the Santa Cruz Mountains

Seems like I "Google" something nearly everyday. I can barely remember what life was like before the information highway. For subjects like gardening however information from your own neck of the woods is the best. Locals have knowledge of weather patterns, plant behavior, pests and diseases, flowering sequences- you name it – there's a neighbor or friend or local expert who can help you. I'm fortunate in that lots of people ask questions of The Mountain Gardener about gardening here in our unique part of planet earth. Here are some recent inquiries. You might be wondering about the same things.kale covered with frost

We all rely on Sunset's Western Garden Book as the bible for gardeners. With each new edition I eagerly look to see if they've figured out that Felton is not in zone 7. Sure it was pretty cold around here in January but even with climate change the San Lorenzo and Scotts Valleys are not as cold as a zone 7. Even considering microclimates we can grow a wide variety of plants that would not survive in the Sierra foothills, the Gabilan range, the Coast range or other zone 7 areas. Wish they would ask local nurseries and knowledgeable horticulturists what the weather is really like here.

Knowing the climate in your area helps determine what you can grow in your garden.  It's confusing to both new and seasoned gardeners alike. Here are some tips to help you determine in what zone you garden.

Zone 7 has the coldest winters in our area.  Very high ridge tops like the Summit area and the most northern portions of Bonny Doon lie in this zone.  My records show average winter lows ranging from 15-25 degrees based on 20 years of input from gardeners in these areas.  This does not apply to other areas of zone 7, just those around here.   Record lows have occurred during freezes in 1990, 1996 and 2007 but as gardeners we rely on average highs and lows to help guide our planting times.  Spring weather comes later in this zone with the growing season mainly from April – October.

Zone 15 encompasses most of our area.  Winter lows average 20-30 degrees. The valley floor of both San Lorenzo and Scotts Valley lie in this zone and are what I call "a cold 15".  Cold air sinks and is trapped in these areas. Often there is damage to the tips of oleanders and citrus while gardenias and tropical hibiscus need a lot of extra protection.There are warmer parts of this zone, though, where the growing season starts in March and ends in November.  These areas rarely get a freeze after March 15th or before Thanksgiving.

Zone 16 – those who live up off the valley floor but below ridge tops live in this "banana belt". Pasatiempo also falls in this thermal zone.  Light frost can occur during the winter but mostly the winter lows in this zone stay near or above freezing. You might have cold pockets on your property however so plan accordingly.

Some gardening tasks are dependent on the weather. Many shrubs,perennials and grasses are to be pruned after danger of frost is past and many vegetables should be started after this time as well. As a reminder the estimated date of our last hard frost is March 15th. I've kept a weather journal for my area, the San Lorenzo valley, since 1992.  Based on my records, we may get a few frosts, especially after a storm, in late March or early April but for the most part, we have mostly passed the chance of having a heavy frost. Still it's a good idea to have a cardboard box or blanket ready to protect your young seedlings.

I hope this helps in choosing plants that will thrive in your garden.
 

What to Do in the Garden in February

Blue Nikko hydrangeaYou know spring is coming when you see daffodils starting to open. You know spring is coming when plum trees begin their glorious show. And you know spring is coming when you begin to think of all those garden tasks that still need your attention.

February is one of those months that ease us into the gardening season. Didn't get the roses pruned at the end of January? There's still time. Didn't dormant spray for fungal diseases and insect control? There's still time. Didn't plant any new berries yet for summer desserts? There's still time – but don't delay much longer.

What is important to do in the garden in February?

Prune fruit trees and smother overwintering eggs and insects by spraying with horticultural oil. Combine your spray with lime-sulfur ( except on apricot trees ) or copper soap to kill fungal disease spores like the ones that cause peach-leaf curl. Spinosad has also been shown to supress fungal diseases. Do this when the buds swell but before they open.

Prune your roses if you haven't already.

Prune repeat flowering roses by removing spindly or diseased shoots and dead wood. Do this before they start leafing out which wastes plant energy. Cut back the remaining stems by about a third, cutting canes at a 45-degree angle just above an outward facing bud. Don't worry whether your pruning job is perfect. Roses are super forgiving and you can trim them up again later. You want to produce lots of roses not just a few of exhibition size. Aim for a vase-shaped  bush with an open center.

Prune old garden roses that bloom once in the spring after flowering. Climbing roses require little pruning. Cut out extra stems if there are too many and also cut back long established canes to about the place where they are slightly thicker than a pencil. Then cut each side stem down to several inches. This will cause the cane to flower along its complete length for a beautiful spring display.

If any old leaves still cling to the plant, remove them. Rake up any debris beneath the plant and discard to eliminate overwintering fungus spores. It's a good idea to spray both the bare plant and the surrounding soil with a combination organic horticultural oil to smother overwintering insect eggs and a dormant spray like lime-sulfur or copper soap to kill fungus spores. If you usually have a problem only with black spot you can use a mixture of 1 teaspoon baking soda with a few drops of light oil in 1 quart water and spraying every 7 to 10 days.  Thoroughly coat the trunk, branches and twigs.

Cut back woody shrubs. To stimulate lush new growth on plants like Mexican bush sage and artemisia to within a few inches of the ground. Don't use this approach on lavender or ceanothus, though. Lightly prune them after blooming and don't cut back to bare wood inside the plant.  Prune fuchsias back by a third and remove dead, crossing branches and interior twiggy growth. Container fuchsias can be cut back to the pot rim.

Cut back hydrangeas stems that bloomed last year if you haven't already done so and apply a soil acidifier if you want the flowers blue. Although sulfur is the traditional favorite for quickly acidifying soil it is not as kind to many beneficial soil microorganisms. Coffee grounds, pine needles, peat moss and cottonseed meal are kinder to your soil.

Don't cut back grasses yet if you get frost in the area where they grow. Wait until mid-March.

Don't prune spring flowering shrubs and trees like lilacs, flowering cherries, plums and crabapples,  rhododendrons, azaleas, camellias, weigela or spirea until after they flower.  You can cut some branches during flowering to bring in cuttings for bouquets.

Wait to prune back perennials that may have their new foliage damaged in a late frost. Same goes for shrubs that got hit by those January frosts. That damaged foliage can protect the plant from further frost damage. Mid-March is the estimated date of hard frost in our area.
 

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