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Help your trees cope with wind

Gusty conditions can do a lot of damage

Sacramento Digs Gardening
BY Debbie Arrington PUBLISHED JAN 21, 2022

The average mature neighborhood has many varieties of trees, of differing ages. (These are along one side of Del Campo Park in Carmichael.) Watch for wind damage among trees this weekend. (Photo: Kathy Morrison)

Can your garden cope with wind? This weekend, it’s likely you’ll find out.

According to the National Weather Service, Northern California will experience very windy conditions now through Saturday night.

“Gusty winds are expected today into tomorrow,” says the Sacramento NWS office. “The strongest winds will be in the Sierra with gusts to 50 to 70 mph-plus. Be prepared for downed trees and tree limbs, potential power outages, difficult driving conditions for high-profile vehicles, and impacts to outdoor recreation.”

Sacramento is expected to see gusts of more than 40 mph – enough to topple a tree. At greatest risk are conifers – redwoods, pines, firs and other evergreens. Their foliage catches the wind like a huge sail.

Also at risk are trees weakened by drought – which is potentially most of our urban forest. Although overall water has been good this winter, tree roots may have shrunk dramatically after years of low water. With fewer healthy, strong roots, trees have less support to hold them upright.

Contrary to popular belief, lessening inner foliage or branches on limbs of redwoods and other big trees – a pruning method nicknamed “lion tailing” – does not prevent wind damage. Instead, it weakens limbs and makes them more likely to break off.

But it’s not just big trees that can suffer wind damage, say the UC Cooperative master gardeners.

“Wind can damage bark, flowers, foliage, fruit, and limbs of most any tree or shrub. High winds can severely damage or kill trees, such as when major limbs fail (break) or the trunk topples to the ground.

“Wind-damaged leaves become necrotic along the margins and tips and drop prematurely,” they add. “High wind can break flowers, foliage, and limbs and tear and shred leaves, sometimes called tatters.”

Wind damage looks a lot like other kinds of problems, say master gardeners.

“Wind injury to foliage can resemble damage from frost, hail, herbicide damage, salinity and water deficits,” master gardeners say.

Some plants just tend to get more wind damage than others.

“Plants that grow fast, become tall, and have broad, thin leaves are usually less tolerant of wind,” say the master gardeners. “Smaller plants and those with narrow leaves with a thicker cuticle better tolerate wind.”

Insect damage or disease also can weaken branches and make them more susceptible to wind damage. Prune off diseased wood before it falls off.

For more tips on helping plants cope with wind, see these UC master gardener tips:

http://ipm.ucanr.edu/PMG/GARDEN/ENVIRON/wind.html

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Garden checklist for week of Aug. 16

During this break in the heat, feed your garden. Make sure to water before and after applying fertilizer.

* In the garden, direct seed beets, carrots, leaf lettuce and turnips.

* Plant potatoes.

* Harvest tomatoes, beans, squash, pepper and eggplants to prompt plants to keep producing. Give your plants a deep watering twice a week, more if planted in containers. Also, give them a boost with phosphate-rich fertilizer to help fruiting.

* Watch out for caterpillars and hornworms in the vegetable garden. They can strip a plant bare in one day. Pick them off plants by hand in early morning or late afternoon.

* Feed citrus trees their last round of fertilizer for the year. This will give a boost to the fruit that’s still small.

* Mulch can be your garden’s best friend – it conserves moisture while blocking out weeds. But don't let mulch mound around stalks, stems or trunks. That can promote rot.

* Camellia leaves looking a little yellow? Give them some chelated iron. That goes for azaleas and gardenias, too.

* Pick up after your fruit trees. Clean up debris and dropped fruit; this cuts down on insects and prevents the spread of brown rot. Then feed fruit trees with slow-release fertilizer for better production for next year.

* To prolong bloom into fall, feed begonias, fuchsias and container plants. Always water before fertilizing.

* Fertilize fall-blooming perennials, too. Chrysanthemums can be fed until the buds start to open.

* Prepare for a fall full of flowers by paying a little extra attention to your garden. Cut off spent blooms from roses, annuals and perennials, then give them a boost of fertilizer. Make sure to water plants before feeding. Roses will rebloom about six to eight weeks after deadheading.

* Indoors, start seedlings for fall vegetable planting, including bunching onion, cabbage, broccoli, cauliflower, kale, radicchio and lettuce.

* Sow seeds of perennials in pots for fall planting including yarrow, coneflower and salvia.

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