Monthly Archives: January 2011

beneficial insects, berries, fruit trees

Warm Spells during the Winter

Leave a comment

Everyone’s talking about the wonderful weather we’ve been enjoying the past few weeks. Spring is in the air. Or is it? Whether you like to putter in the garden or be out hiking, the warblers are calling to you. But is it unusual to have warm weather around here in January? Not at all. Just last year before the rains started we had several weeks of Caribbean-like weather. Back in 2009 during the first two weeks of January temps were in the 70’s and low 80’s. Don’t worry. Mother Nature knows how to adjust to changes in the weather- slowing down when it’s really cold and catching up when it’s mild.

Most plants will acclimate to a gradual return to more normal cooler late winter temperatures. We’re lucky here that we don’t get snow ’cause that’s when nature can really deliver a wallop to tender new growth and buds. If winter remains mild plants may bloom a little earlier. Lilacs, apples and grapes, for example,may flower a week earlier. Weeds can really become aggressive and pests and diseases that were held in check by the cold may become more of a problem. Lifestyles of beneficial insects may get out of sinc with the pests they help control.

Plants make the most of warmer weather. Lawns and other groundcovers, for instance, benefit from warm temperatures in winter. Root growth is encouraged in existing areas and young seedlings  planted last fall become established quicker. If temperatures return to winter norms, grasses will "harden off" and be fine in spring.

Fruit trees usually have no problems with a warm streak. A prolonged warm spell could cause low-chill varieties of peaches, plums and cherries to break bud and flower but these conditions are rare.

It’s a similar story for ornamental trees and shrubs. "Most woody plants have evolved to deal with a brief spell of unseasonably warm weather," says Nina Bassuk, woody plant specialist and director of the Urban Horticulture Institute. Buds won’t open during the first warm spell and then get killed by a return to cold temperatures because buds require a period of cold temperatures to break dormancy. Only some may begin to flower prematurely and risk losing those flowers but the long-term health of most plants probably won’t be affected.

Strawberries are oblivious to the weather. Blackberries and some raspberries are another story. Like some fruit trees, their chilling requirements may have already been met, their buds are swelling and they’re ready to take off. A rapid chill could freeze the buds and canes begin to die from the top down. But even if the entire cane dies, healthy new canes will emerge in spring. The early summer berry crop could be lost but fall berries will be fine.

Most bulbs and perennial flowers should come through a warm spell just fine. The buds of these plants are at or below ground level and often protected further by mulch or leaves. Even if temps return for below freezing, late winter cleanup of old stems will get rid of any winter dieback.

Enjoy this hint of spring. It won’t last for long.
 

bare root plants, berries, edibles, fruit trees

Healthy Edibles to Grow from Bare Root

Leave a comment

Make this the year you take advantage of planting blueberries, grapes, strawberries,  peaches, cherries and apples from bare-root stock. These crops are .

Because of all the rains that fell in December, the growers are late getting into their fields to dig up the 2 million bare-root plants they harvest and deliver to your local nursery. The Santa Cruz Mountains stay cooler for a longer period in the winter, allowing dormant trees, shrubs and vines to be available to the home gardener in bare root form throughout February, too. The early bird gets the worm as far as best selection goes so take a look around your property and decide which yummy fruit and berry you’ll be adding to your garden.

I love blueberries. They are low in calories and so good for you. They contain the highest concentration of antioxidants of all fresh fruit. They have lots of vitamins and help boost your immune system. The list or benefits goes on and on. On top of all that, they make beautiful hedges with stunning fall color.

One variety I’m dying to try is a hybrid from Australia called Brigitta.  This Northern highbush variety is sweet yet slightly tart. The grower says they possess an amazing shelf. They’ve stored this blueberry for over a month in the refrigerator and they were still crisp with a great taste. The berry is medium to large and ripens late in the season. The bush is a fast grower to 4-6 feet with deep green foliage and bronze tinted new growth. It is semi-self fertile but produces more  planted alongside Bluecrop. Try planting them each in their own wine barrel where you can control the soil, watering and sun exposure.

Apples-you know the saying "one a day keeps the doctor away". There are lots of apple varieties to choose from.  Honeycrisp is a large, scarlet over yellow apple with a well-balanced sweet tart flavor. The texture is similar to a crisp watermelon or Asian pear and is very juicy. They ripen in late September.

Another crisp apple to grow is the Braeburn apple. The skin is green overlaid with orange-red while the flesh is firm, crisp and juicy. It is mildly sweet tart with an excellent flavor, is a heavy producer and stores well. It ripens October to early November.

Love biting into a juicy peach in the summertime? Try growing Santa Barbara, considered the best tasting peach for homeowners. Flesh is yellow, freestone and red near the pit. It has a melting texture, delightfully sweet, combined with the delicious peach flavor. Peaches are self-fertile. This variety requires only 300 hour of chill below 45 degrees so is good for warmer winter areas as well as the mountains.

Your favorite fruit are cherries but you don’t have much room for a big tree? Then the Compact Stella cherry is the tree for you. The fruit is firm, sweet and dark red with good flavor and texture. It’s excellent for eating, canning and preserves while being self fertile and a good pollinizer for all sweet cherries.

There are other edibles available now, too, like figs, pomegranate, persimmon, apricot, pears, plums, asparagus, artichokes, strawberries, grapes and blackberries. They all sounds delicious.
 

flowering shrubs, fruit trees, plant care, pruning tips, roses

Time to Prune Roses, Fruit trees and Flowering Shrubs

Leave a comment

I’ll be the first to admit it’s hard to bundle yourself up to go out and work in the garden on a cold winter day. Bright sunshine sure helps but still it’s not t-shirt weather yet. It helps to think how good that fresh air will feel, not to mention that working in the garden relieves stress. And think about all that great exercise you get without getting on the boring treadmill.

Depending on your weight and how vigorous you work, one hour of gardening can burn up about 272 calories. Transplant a shrub, and the number of calories burned could jump to an incredible 340 calories per hour. Just think of that extra helping of potatoes-au-gratin you had over the holidays.

There’s plenty to do this time of year. Neaten things up by removing rotting perennials and sweep the leaves and debris off the driveway and your roof. 

It’s time to prune fruit trees and smother overwintering eggs and insects by spraying with horticultural oil. Combine your spray with lime-sulfur ( except on apricot trees ) to kill fungal disease spores like the ones that cause peach-leaf curl.  has also been shown to supress fungal diseases.You’ll want to do this again when the buds swell but before they open ( about Valentine’s Day )

Control large vines like overgrown honeysuckle, pink jasmine,  morning glory, passion vine, potato vine and trumpet creeper by radically thinning or even cutting back low to the ground if they are a big, tangled mess. Wait until after flowering to heavily prune spring-blooming vines such as wisteria.

Pruning Roses
When buds along rose canes begin to swell, 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 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.

Other tasks to do in the garden in January:

Cut back hydrangeas if you haven’t already done so. Apply soil sulfur, aluminum sulfate or other acidifier if you want to encourage blue flowers.

Cut back summer flowering deciduous shrubs and vines.  Don’t prune spring flowering varieties like lilac, flowering cherry, plum and crabapple, rhododendrons, azaleas, camellias, weigela and spirea until after flowering or you can cut some during flowering to bring in cuttings for bouquets.