Helping your plants beat the heat

Helping your plants beat the heat

July 2, 2012 at 4:04PM
(Erik S. Lesser/The Minnesota Star Tribune)
Janet Turner, 42, wipes the sweat off her brow while watering her plot at the Decatur High School Community Garden on Tuesday, July 12, 2011, in Decatur, Ga. Hot weather is continuing around Georgia and other parts of the country and the National Weather Service has issued a heat advisory for northern and central parts of the state. The weather service says highs in the 90s to about 100 can be expected for most of the state Tuesday and Wednesday. (AP Photo/Erik S. Lesser)
(ASSOCIATED PRESS - AP/The Minnesota Star Tribune)

These are the days that run up the water bill.

With a string of 90-plus and even 100-degree temperatures in the forecast over the next few days, we're going to be dumping a lot of water on our plants, trying to keep them healthy and hydrated in this extreme heat.

Even with extra watering, plants can suffer from heat stress in weather like this. My leaf lettuce and arugula are already bolting. My begonia blossoms look scorched.

My tomatoes look OK for now, but I'm a little worried they'll soon be wilting, dropping blossoms and fruit.

Last night I spent more than half an hour running back and forth from the kitchen faucet to my patio containers, trying to replenish the moisture Mother Nature had sucked out of them during the day. I'm sure my plants will be parched again when I come home tonight.

Veggies need a lot of water even in normal weather. How much? Some sources say each plant needs 3 to 5 gallons of water each week -- even more during a heat wave. Container-grown veggies, like mine, are especially vulnerable to drying out.

To make sure you're giving yours enough water, poke a finger into the soil, about an inch deep. If the soil feels dry, water. And make sure to water deeply. A light watering that only wets the surface won't cut it.

You can also try shading certain crops, such as leafy greens, to slow bolting and buy you a couple more days of edible crop.

On the plus side, the heat wave gives us an excuse not to mow for a few days. Grass is already under stress in extreme heat, and cutting it stresses it further.

And our tropicals will love this steamy jungle weather.

How's your garden faring so far -- is the heat taking a toll yet?

about the writer

about the writer

kimjpalmer