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One more day of heat to endure, then ...


Blackberries are ripening quickly in the heat. (Photos: Kathy Morrison)
Use the coming cooler weather to your garden's advantage



Everyone who's ready for this heat to end, raise your hands! Good, now fan yourself. That's a little better. And Friday brings real relief, as overnight temperatures drop back into the 60s. By the weekend the overnights will return to the 50s, with daytime highs in the low 80s.

We even have a chance of thunderstorms and rain showers Friday night into Saturday morning, the National Weather Service is reporting.

So our gardens should recover. Be sure to do a reconnaissance Friday morning, or this evening when it's cooler, keeping these things in mind:

-- Heat stress and temps over 95 shut down a lot of vegetable production, especially tomatoes. Those plants will need some time to recover before they start setting again. Pollinators also are less active in heat, but usually perk up faster than the plants do, so they should be busy again Friday. Honeybees and birds will appreciate a water source in the garden, by the way.

Stippling on leaves is the first clue to the presence of
spider mites.
-- Spider mites thrive in hot, dusty conditions and are attracted to heat-stressed plants. Tomatoes and beans are some of their favorites, so check the leaves of those plants. If you see stippling, give the leaves (top and underside) a vigorous spritz of water with the hose sprayer. Water discourages these pests, and believe me, you don't want them to take hold this early in the season. We have more heat ahead of us this summer. And please do not reach for a broad-spectrum pesticide, which will also kill off the beneficial insects that like to dine on these pests. For more on spider mites, read
Debbie's post from earlier this month .

-- Check berries, which might be ripening faster than expected, thanks to the heat.

-- Make a note of any plant that's having a really hard time in this heat wave. It might need relocating, if it's getting too much sun. If that's impossible, there's always what Farmer Fred Hoffman calls "shovel pruning." Life's too short to put up with a difficult plant, right? (And if you want to search for a replacement, here's an excellent site for looking up plants, categorized by water usage in each region of the state: WUCOLS , which stands for Water Use Classification of Landscape Species.)

-- If the troubled plant is in a pot, maybe the soil has dried out too much. Plop that pot into a large bucket of water for a good soak, but don't forget to take it out to drain. Another possibility is that it's root-bound and needs a larger container. Move it into the shade, if possible, but don't transplant it now -- wait for the cooler weather this weekend.




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Garden checklist for week of April 19

After this midweek storm, start getting serious about spring gardening. Flowers are blooming about three weeks ahead of schedule. That includes weeds!

* Get ready to swing into action in the vegetable garden – if you haven’t already. As nights warm up over 50 degrees, set out tomato, pepper and eggplant transplants.

* From seed, plant beans, beets, cantaloupes, carrots, corn, cucumbers, melons,  radishes and squash; wait on pumpkins until May. Plant onion sets.

* In the flower garden, plant seeds for asters, cosmos, celosia, marigolds, salvia, sunflowers and zinnias. Transplant petunias, zinnias, geraniums and other summer bloomers.

* Plant perennials and dahlia tubers for summer bloom. Late April is about the last chance to plant summer bulbs, such as gladiolus and tuberous begonias.

* Transplant lettuce and cabbage seedlings.

* 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? Give citrus trees a low dose of balanced fertilizer (such as 10-10-10) during bloom to help set fruit. Keep an eye out for ants. If leaves look yellow, your tree may need an iron boost -- apply some chelated iron fertilizer.

* Apply slow-release fertilizer to the lawn.

* Thoroughly clean debris from the bottom of outdoor ponds or fountains.

* Spring brings a flush of rapid growth, and that means your garden needs nutrition. Give shrubs and trees a slow-release fertilizer. Mulch with a 1-inch layer of compost, which helps the soil, but keep it a few inches away from trunks and stems.

* 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.

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Food in My Back Yard (FIMBY) Series

Lessons learned during a year of edible gardening

WINTER

Is edible gardening possible indoors?

Hints for choosing tomato seeds

Starting in seed starting

Why winter is the perfect time to plant fruit trees

When to plant? Consider staggering your transplants

How to squeeze more food into less space

Potatoes from the garden

Plant a fruit tree now -- for later

Win the weed war by tackling them in winter

Tips for planting bare-root trees, shrubs and vegetables

Time to give vegetable seedlings some more space

Ways to win the fight against weeds

FALL

Dec. 16: Add asparagus to your edible garden

Dec. 9: Soggy soil and what to do about it

Dec. 2: Plant artichokes now; enjoy for years to come

Nov. 25: It's late November, and your peach tree needs spraying

Nov. 18: What to do with all those fallen leaves?

Nov. 11: Prepare now for colder weather in the edible garden

Nov. 4: Plant a pea patch for you and your garden

Oct. 27: As citrus season begins, advice for backyard growers

Oct. 20: Change is in the autumn air 

Oct. 13: We don't talk (enough) about beets

Oct. 6: Fava beans do double duty

Sept. 30: Seeds or transplants for cool-season veggies?

Sept. 23: How to prolong the fall tomato harvest 

SUMMER

Sept. 16: Time to shut it down? 

Sept. 9: How to get the most out of your pumpkin patch

Sept. 2: Summer-to-fall transition time for evaluation, planning

Aug. 26: To pick or not to pick those tomatoes?

Aug. 19: Put worms to work for you

Aug. 12: Grow food while saving water

Aug. 5: Enhance your food with edible flowers

July 29: Why won't my tomatoes turn red?

July 22: A squash plant has mosaic virus, and it's not pretty

July 15: Does this plant need water?

July 8: Tear out that sad plant or baby it? Midsummer decisions

July 1: How to grow summer salad greens

June 24:  Weird stuff that's perfectly normal

SPRING

June 17: Help pollinators help your garden

June 10: Battling early-season tomato pests

June 3: Make your own compost

May 27: Where are the bees when you need them?

May 20: How to help tomatoes thrive on hot days

May 13: Your plants can tell you more than any calendar can

May 6: Maintain soil moisture with mulch for garden success

April 29: What's (already) wrong with my tomato plants?

April 22: Should you stock up on fertilizer? (Yes!)

April 15: Grow culinary herbs in containers

April 8: When to plant summer vegetables

April 1: Don't be fooled by these garden myths

March 25: Fertilizer tips: How to 'feed' your vegetables for healthy growth