Freeze warning remains in effect through Monday morning; take frost precautions
Get that multitude of leaves out of the gutter and put them to work. They make excellent mulch to keep roots warm, or at the very least they can become compost. Kathy Morrison
Our first big chill of fall has us shivering. And more cold is on the way.
According to the National Weather Service, the greater Sacramento area may get pretty frosty the next few nights. A freeze warning remains in effect for much of the Central Valley.
“The Freeze Warning will continue this Sunday morning and Monday morning from 2 a.m. to 9 a.m.,” tweeted the NWS Sacramento office on Saturday morning. “Temps in the Valley may get as low as 28°-35°. These temps can damage plants that are sensitive to cold, as well as impact unhoused populations, pets and those without access to proper heating.”
This may seem too early for frost, but Sacramento temperatures can plunge below freezing any time between November and March. Sacramento’s record for earliest frost (30 degrees) was Nov. 4, 1935. On average, our first real frost hits Dec. 10, according to the UC Cooperative Extension Master Gardeners of Sacramento County.
Overnight lows will dip down to the low 30s – 10 degrees below average; make sure to take frost precautions in the late afternoon before the cold starts to set in.
Daytime highs will be below normal, too. Sacramento is expected to reach only 60 degrees Sunday, Monday and Tuesday before cooling off into the 50s the remainder of the week.
A slight chance of showers Wednesday and Thursday enters the forecast along with a lot of clouds. That cloud cover will warm up overnight temperatures to the mere 40s instead of flirting with freezing.
Fortunately, soil is still feeling more like fall than winter. It’s not too late to do some cool-season planting.
Otherwise, concentrate on helping your garden stay comfortable during these frosty nights – and clean up all those leaves!
* Irrigate frost-tender plants such as citrus in the late afternoon. That extra soil moisture increases temperatures around the plant a few degrees, just enough to prevent frost damage. The exception are succulents; too much water before frost can cause them to freeze.
* Cover sensitive plants before the sun goes down. Use cloth sheets or frost cloths, not plastic sheeting, to hold in warmth. Make sure to remove covers in the morning.
* Use fall leaves as mulch around shrubs and vegetables. Mulch acts as a blanket and keeps roots warmer.
* Stop deadheading; let rose hips form on bushes to prompt dormancy.
* Prune non-flowering trees and shrubs.
* Clean and sharpen garden tools before storing for the winter.
* Brighten the holidays with winter bloomers such as poinsettias, amaryllis, calendulas, Iceland poppies, pansies and primroses.
* Keep poinsettias in a sunny, warm location – and definitely indoors overnight. Water thoroughly. After the holidays, feed your plants monthly so they’ll bloom again next December.
* Rake and remove dead leaves and stems from dormant perennials.
* Plant spring bulbs. Don’t forget the tulips chilling in the refrigerator. Daffodils can be planted without pre-chilling.
* This is also a good time to seed wildflowers and plant such spring bloomers as sweet peas, sweet alyssum and bachelor buttons.
* Plant trees and shrubs. They’ll benefit from fall and winter rains while establishing their roots.
* Set out cool-weather annuals such as pansies and snapdragons.
* Lettuce, cabbage and broccoli also can be planted now.
* Plant garlic and onions.
* Bare-root season begins now. Plant bare-root berries, kiwifruit, grapes, artichokes, horseradish and rhubarb.
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Garden Checklist for week of Nov. 3
November still offers good weather for fall planting:
* If you haven't already, it's time to clean up the remains of summer. Pull faded annuals and vegetables. Prune dead or broken branches from trees.
* Now is the best time to plant most trees and shrubs. This gives them plenty of time for root development before spring growth. They also benefit from fall and winter rains.
* Set out cool-weather annuals such as pansies and snapdragons.
* Lettuce, cabbage and broccoli also can be planted now.
* Plant garlic and onions.
* Keep planting bulbs to spread out your spring bloom. Some possible suggestions: daffodils, crocuses, hyacinths, tulips, anemones and scillas.
* This is also a good time to seed wildflowers and plant such spring bloomers as sweet pea, sweet alyssum and bachelor buttons.
* Rake and compost leaves, but dispose of any diseased plant material. For example, if peach and nectarine trees showed signs of leaf curl this year, clean up under trees and dispose of those leaves instead of composting.
* Save dry stalks and seedpods from poppies and coneflowers for fall bouquets and holiday decorating.
* For holiday blooms indoors, plant paperwhite narcissus bulbs now. Fill a shallow bowl or dish with 2 inches of rocks or pebbles. Place bulbs in the dish with the root end nestled in the rocks. Add water until it just touches the bottom of the bulbs. Place the dish in a sunny window. Add water as needed.
* Give your azaleas, gardenias and camellias a boost with chelated iron.
* For larger blooms, pinch off some camellia buds.
* Prune non-flowering trees and shrubs while dormant.
* To help prevent leaf curl, apply a copper fungicide spray to peach and nectarine trees after they lose their leaves this month. Leaf curl, which shows up in the spring, is caused by a fungus that winters as spores on the limbs and around the tree in fallen leaves. Sprays are most effective now.
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