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Get ready for a heat wave


This little tomato is in danger of getting sunburned in triple-digit heat. Shade cloth and burlap are options for afternoon shade. (Photos: Kathy Morrison)

Triple-digit temperatures are on the way; help your garden cope



Is your garden ready for summer? Although we’ll officially still be in spring for almost another month, high heat is coming very soon.

According to the National Weather Service, temperatures will rise rapidly over Memorial Day weekend. The greater Sacramento area could hit triple digits as soon as Tuesday or Wednesday.

Several days in the high 90s are forecast including a string of midweek 99s.

Take time now before this late May heat wave to help your garden cope:

* Deep water shrubs, trees, perennials and vegetables. Give your tomatoes a good soaking.

* Mulch, mulch, mulch! Spread a thick, cooling layer of organic material to retain that moisture and keep plant roots temperate. Use straw, old leaves, bark, grass clippings, even shredded newspaper. Don’t use rocks; they retain too much heat.

Heat will make artichokes open quickly.
* Harvest lettuce, cabbage, broccoli and other cool-season vegetables. This heat will cause them to bolt – send out flower shoots and go quickly to seed. Higher temperatures also tends to make greens bitter.

* Harvest artichokes before the flowers open. (The heat will open them quickly.) Those little artichokes on side shoots won’t get bigger; they’re ready, just smaller.

* Shade peas, spinach and other cool-season crops that aren’t ready to harvest. Erect temporary shade structures to ward off some of that blistering afternoon sun. That will buy those veggies a few more weeks of production.

* Already have baby tomatoes or peppers? Shade those plants in the hot afternoon, too, to protect from sunburn.

* Keep an eye on new plantings and seedlings. Make sure they stay hydrated. Check soil moisture and water in the early morning or evening.

* Create some needed summer shade for veggies – plant sunflowers. These fast-growing (and tall) plants can shade neighbors who appreciate an afternoon break from direct sun such as peppers or eggplant.

* Let the vines keep the soil cooler. Plant watermelons, pumpkins, sweet potatoes, cucumbers, squash and other vining crops. Their vines will cover the soil, keeping it cooler and blocking out weeds. To be doubly effective, mulch around the plants before the vines cover everything.

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Dig In: Garden Checklist

For week of Dec. 10:

Take advantage of these dry but crisp conditions. It’s time to get out the rake!

* Rake leaves away from storm drains and keep gutters clear.

* Fallen leaves can be used for mulch and compost. Chop up large leaves with a couple of passes with a lawn mower.

* Prune non-flowering trees and shrubs while they’re dormant. Without their foliage, trees are easier to prune.

* Rake and remove dead leaves and stems from dormant perennials.

* Make sure to take frost precautions with new transplants and sensitive plants. Mulch, water and cover tender plants in the late afternoon to retain warmth.

* Succulent plants are at particular risk if temperatures drop below freezing. Don’t water succulents before frost; cover instead. Use cloth sheets, not plastic. Make sure to remove coverings during the day.

* 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. Water thoroughly. After the holidays, feed your plants monthly so they'll bloom again next December.

* Just because it rained doesn't mean every plant got watered. Give a drink to plants that the rain didn't reach, such as under eaves or under evergreen trees. Also, well-watered plants hold up better to frost than thirsty plants.

* Plant garlic (December's the last chance -- the ground is getting cold!) and onions for harvest in summer.

* Bare-root season begins. Plant bare-root berries, kiwifruit, grapes, artichokes, horseradish and rhubarb. Beware of soggy soil. It can rot bare-root plants.

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