Save the Tomatoes! How to Protect Your Raised Bed from a Heat Wave

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Garden blogger Yvonne Savio gives us her best tips for keeping treasured veggies alive, along with what to think about for fall when it could be hot (or not).

“In August, it can really be a matter of just trying to keep your plants from expiring every minute of the day,” says Yvonne Savio, the former master gardener coordinator in Los Angeles County and popular blogger whose site, Gardening in LA, is a treasure trove of information no matter where you live.

Of course, you don’t need to go to anyone’s website to know it’s hot, and that causes problems. For example, Savio says, it’s hit 95°F in Pasadena, where she lives, but 85°F is the top temperature for tomato plants to put out new blossoms. Translation: When the weather is in the 90s, no new tomatoes.

Fortunately, Savio is here to tell us what to do when the temperature is climbing.

We also got into what to plant for fall, which, thanks to climate change, is getting more complicated. After all, what the Farmer’s Almanac once predicted for September and October is often no longer true, with heat extending later into the year. Fortunately, Savio has a great hack, as you’ll see below.

One other piece of advice for new plantings? Savio reminds us that the seedlings we buy have often been grown in select greenhouses with controlled climates. “They get in the real world and are like, ‘What’s going on? I’m outta here,’” she says, adding that beginning gardeners often blame themselves for killing the plant.

Here, Savio’s tips on what to do about the heat that’s already descended, and what to do about potential heat and your fall plantings

So what do people need to know when it comes to watering their raised bed or vegetable garden in this heat?

Continued below.