No fooling: Chilly nights forecast, with possible frost
Cherry blossom time! This little Bing is starting to show off. Meanwhile, winter hangs on, givjng us lower-than-normal overnight temperatures. Kathy Morrison
How cold? “Dress for winter,” says the National Weather Service.
“Mild overnight lows this weekend will be followed by COLD lows returning early next week after the passage of a cold weather system,” tweeted the NWS Sacramento office on Saturday. “Use the weekend to plan ahead so you can protect your pets, plants and people!”
That cold weather system is expected to dump more snow in the Sierra, which already received more than 700 inches this winter. That’s plenty of moisture in our water bank.
For Sacramento, there’s no snow – or even more rain – but plenty of chill. The weather service predicts overnight lows in the mid 30s Monday, Tuesday and Wednesday with “areas of frost” forecast for the wee hours of Tuesday morning. Make sure to cover any tender transplants.
Daytime highs continues to stay below normal, too. Afternoons will stay below 63 degrees until finally starting to warm on Thursday. Friday’s predicted high is a very comfortable 69 degrees – which is still below normal. Average temperatures for this week in Sacramento: 71 and 46.
What does this mean? It’s still too cold to plant tomatoes. Wait at least another week (or two).
Meanwhile, focus on what’s growing – which is a lot!
* Weed, weed, weed! Take a hoe and whack them at the roots. Aim for 1 inch below the soil line.
* April is the last chance to plant citrus trees such as dwarf orange, lemon and kumquat. These trees also look good in landscaping and provide fresh fruit in winter.
* Smell orange blossoms? Feed citrus trees with a low dose of balanced fertilizer during bloom to help set fruit. Keep an eye out for ants.
* Apply slow-release fertilizer to the lawn.
* Thoroughly clean debris from the bottom of outdoor ponds or fountains.
* Feed shrubs and trees with a slow-release fertilizer. Or mulch with a 1-inch layer of compost.
* Azaleas and camellias looking a little yellow? If leaves are turning yellow between the veins, give them a boost with chelated iron.
* Trim dead flowers but not leaves from spring-flowering bulbs such as daffodils and tulips. Those leaves gather energy to create next year's flowers. Also, give the bulbs a fertilizer boost after bloom.
* Pinch chrysanthemums back to 12 inches for fall flowers. Cut old stems to the ground.
* Mulch around plants to conserve moisture and control weeds.
* From seed, plant beans, beets, cantaloupes, carrots, corn, cucumbers, melons, pumpkins, radishes and squash.
* Plant onion sets.
* In the flower garden, plant seeds for asters, cosmos, celosia, marigolds, salvia, sunflowers and zinnias.
* Plant perennials and dahlia tubers for summer bloom.
* Transplant lettuce seedlings.
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Garden Checklist for week of Jan. 19
Dress warmly in layers – and get to work:
* Apply horticultural oil to fruit trees to control scale, mites and aphids. Oils need 24 hours of dry weather after application to be effective.
* This is also the time to spray a copper-based oil to peach and nectarine trees to fight leaf curl. The safest effective fungicides available for backyard trees are copper soap -- aka copper octanoate -- or copper ammonium, a fixed copper fungicide. Apply either of these copper products with 1% horticultural oil to increase effectiveness.
* Prune, prune, prune. Now is the time to cut back most deciduous trees and shrubs. The exceptions are spring-flowering shrubs such as lilacs.
* Now is the time to prune fruit trees. Clean up leaves and debris around the trees to prevent the spread of disease. (The exceptions are apricot and cherry trees, which are susceptible to a fungus that causes dieback if pruned now. Save those until summer.)
* Prune roses, even if they’re still trying to bloom. Strip off any remaining leaves, so the bush will be able to put out new growth in early spring.
* Clean up leaves and debris around your newly pruned roses and shrubs. Put down fresh mulch or bark to keep roots cozy.
* When forced bulbs sprout, move them to a cool, bright window. Give them a quarter turn each day so the stems will grow straight.
* Browse through seed catalogs and start making plans for spring and summer.
* Divide daylilies, Shasta daisies and other perennials.
* Cut back and divide chrysanthemums.
* Plant bare-root roses, trees and shrubs.
* Transplant pansies, violas, calendulas, English daisies, snapdragons and fairy primroses.
* In the vegetable garden, plant fava beans, head lettuce, mustard, onion sets, radicchio and radishes.
* Plant bare-root asparagus and root divisions of rhubarb.
* In the bulb department, plant callas, anemones, ranunculus and gladioli for bloom from late spring into summer.
* Plant blooming azaleas, camellias and rhododendrons. If you’re shopping for these beautiful landscape plants, you can now find them in full flower at local nurseries.
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