Killer heat scorches Labor Day weekend; plan accordingly
A honey bee gets its work in early, collecting pollen from the Diablo cosmos flower on what will be another hot day. Kathy Morrison
Don’t let slightly cooler temperatures on Friday and Saturday fool you; this heat wave hasn’t hit its peak.
According to the National Weather Service, conditions for the next four days will be downright “dangerous.” An “extreme heat warning” is in effect for the Sacramento Valley and Sierra foothills from 11 a.m. Sunday through 8 p.m. Wednesday. A high of 115 degrees – which would be an all-time high for Sacramento – is possible.
“Very high risk of heat stress or illnesses for the entire population,” the weather service said Saturday. “Stay hydrated. Avoid being outdoors in the sun 10 a.m. to 6 p.m. … Stay in a cool place especially during the heat of the day.”
Those conditions are unsafe for animals of all kinds; keep pets indoors, too.
As for your garden, the best plan is to water early and deeply. Give plants the moisture they need to cope with this high heat. Container plantings are especially at risk; move pots to shady areas if possible.
With this heat also comes high fire danger. Do not use power tools or anything that could cause a spark to fly.
How hot can it get? The weather service predicts 112 degrees for Monday and Tuesday in Downtown Sacramento, although that could creep higher. Little relief will come after dark with overnight lows forecast in the mid 70s.
Temperature records likely will be set. Before this week, Sacramento’s hottest September day on record: 109 degrees.
Triple-digit highs will continue through Thursday before finally “cooling” to a mere 98 degrees Friday, says the weather service.
During this heat spell, take it easy outdoors and plan for cooler days ahead – like next week. The long-range forecast calls for low 90s by next Saturday and Sunday.
This week in the garden:
* Harvest tomatoes, peppers, squash, melons and eggplant. In this heat, pick sooner than later; they can turn overripe in a hurry.
* Compost annuals and vegetable crops that have finished producing.
* Deep-water shrubs and trees. Be on the lookout for plants stressed by this heat.
* In the morning, give plants a shower – especially if you see signs of spider mites. Take a hose and blast their webs off vines and bushes.
* Watch out for tomato hornworms. They love this heat, too.
* 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.
* One good thing about hot days: Most lawns stop growing when temperatures top 95 degrees. Keep mower blades set on high.
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Food in My Back Yard Series
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
March 18: Time to give vegetable seedlings some more space
March 11: Ways to win the fight against weeds
March 4: Potatoes from the garden
Feb. 25: Plant a fruit tree now -- for later
Feb. 18: How to squeeze more food into less space
Feb. 11: When to plant? Consider staggering your transplants
Feb. 4: Starting in seed starting
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Garden Checklist for week of May 18
Get outside early in the morning while temperatures are still cool – and get to work!
* Plant, plant, plant! It’s prime planting season in the Sacramento area. Time to set out those tomato transplants along with peppers and eggplants. Pinch off any flowers on new transplants to make them concentrate on establishing roots instead of setting premature fruit.
* Direct-seed melons, cucumbers, summer squash, corn, radishes, pumpkins and annual herbs such as basil.
* Harvest cabbage, lettuce, peas and green onions.
* In the flower garden, direct-seed sunflowers, cosmos, salvia, zinnias, marigolds, celosia and asters. Transplant seedlings for many of the same flowers.
* Plant dahlia tubers.
* Transplant petunias, marigolds and perennial flowers such as astilbe, columbine, coneflowers, coreopsis, dahlias, rudbeckia and verbena.
* Keep an eye out for slugs, snails, earwigs and aphids that want to dine on tender new growth.
* Feed summer bloomers with a balanced fertilizer.
* For continued bloom, cut off spent flowers on roses as well as other flowering plants.
* Are birds picking your fruit off trees before it’s ripe? Try hanging strips of aluminum foil on tree branches. The shiny, dangling strips help deter birds from making themselves at home.
* As spring-flowering shrubs finish blooming, give them a little pruning to shape them, removing old and dead wood. Lightly trim azaleas, fuchsias and marguerites for bushier plants.
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