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How to Survive a Heat Wave in Your Garden

July 5, 2018

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It’s one of those humble-brag type of problems in the garden: Oh look, we’re having this crazy heat wave with wonderfully warm summer weather. What do I do?

While you’re grateful for the nice weather, it’s easy for your plants to take an absolute beating when the temperatures soar high above average. Here’s a few strategies to cope.

How do you deal with a hot summer heat wave in the vegetable garden?  I'll show you how to save your plants with these easy tips for your backyard garden. #gardening #summer #beginnergardener #heatwave #gardentips #vegetablegarden

Disclaimer: I garden in zone 3b in the Canadian Prairies. What is hot for me might be normal for you. If you live in the Southern States and have some other solutions for surviving a heat wave, I would LOVE to hear them in the comments, as you are the experts!

Disclaimer 2: This post contains affiliate links, which means I earn a bit of extra coffee money, at no extra cost to you, if you purchase anything from one of my links.  Thanks for supporting Shifting Roots!

Water, and Water Some More

Now is not the time to be slack with your watering! Water early in the morning for best results. Evening is okay too. Watering in the afternoon is not ideal, but it’s better than no water at all if that’s the only time you’re able to water your plants.

P.S. That whole old wives tale about the water scorching your plants if you water in the afternoon? It’s a myth. Afternoon watering is only bad because more of the water will evaporate, leaving less for the plants.

How do you deal with a hot summer heat wave in the vegetable garden?  I'll show you how to save your plants with these easy tips for your backyard garden. #gardening #summer #beginnergardener #heatwave #gardentips #vegetablegarden
kateepederson.com

Prevent your tomatoes from disease in a heat wave–here’s how!

Surround Your Plants with Mulch

A two inch layer of shredded newspaper, compost (like the kind you buy in bags at the store), wood shavings, or straw go a long way to keeping moisture in and the soil cool.

Related: How to Use Mulch in the Garden

Move Containers to the Shade

Containers looking sad? Move them to an area that gets afternoon shade until the heat wave is over. Make sure you water all containers at least once a day, and check on smaller containers to see if they need an extra watering in the evening.

Fun fact: plants that are planted close together, like those in a square foot garden, act as a living much for each other and provide shade to each other’s leaves. This helps them survive a heat wave with not as much intervention.

Related: Transform your Ugly Outdoor Pots with this Easy DIY

Use a Shade Cloth

While you can move your containers, you can’t move your garden. If your plants are suffering, set up a shade cloth for them during the hottest parts of the day. You can purchase one like this, or drape a large white sheet over your plant.

Just be sure to have some sort of frame or support system so your plants don’t get crushed.

Expect Cool Weather Loving Vegetables to Bolt…

Growing broccoli, cauliflower, lettuce, or spinach? Expect them to bolt during this hot weather. If you see the heat wave coming, try and harvest what you can from them before it hits.

How do you deal with a hot summer heat wave in the vegetable garden?  I'll show you how to save your plants with these easy tips for your backyard garden. #gardening #summer #beginnergardener #heatwave #gardentips #vegetablegarden

…and Flowering Vegetables to Stop

Tomatoes, peppers, and other vegetables will simply stop flowering when the temperatures get too high. There’s nothing you can do about it, just know that the flowers might fall off and you didn’t do anything wrong.

Do Not Fertilize in a Heat Wave. . . until it’s Cooler

Whatever you do, don’t fertilize your plants. Any fertilization at this point is just going to stress out your plants and do more harm than good. Wait until temperatures return to normal or cool down a bit.

How do you deal with a hot summer heat wave in the vegetable garden?  I'll show you how to save your plants with these easy tips for your backyard garden. #gardening #summer #beginnergardener #heatwave #gardentips #vegetablegarden

Pick Ripe Vegetables to Reduce Stress

Did you know that it takes 3 to 4 more times energy for a plant to keep on a ripe vegetable than it does to encourage the plant to grow a new one? If you know a heat wave is coming, do your plant a favour and pick off any ripe or almost-ripe veggies before it hits.

For best harvest, especially for things like lettuce that can wilt, harvest in the early morning.

If you follow these tips, you and your garden can successfully survive this heat wave. Are you going on vacation during the heat wave? Make sure you follow these tips!

How do you deal with a hot summer heat wave in the vegetable garden?  I'll show you how to save your plants with these easy tips for your backyard garden. #gardening #summer #beginnergardener #heatwave #gardentips #vegetablegarden

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Kristen Raney

Kristen is a former farm kid turned urban gardener who owns the popular gardening website, Shifting Roots.  She is obsessed with growing flowers and pushing the limits of what can be grown in her zone 3b garden.  She also loves to grow tomatoes, but oddly enough, dislikes eating them raw.

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Filed Under: Gardening Tagged: Gardening, growing vegetables, heat wave, summer, tips, vegetable garden

About Kristen Raney

Kristen is a former farm kid turned urban gardener who owns the popular gardening website, Shifting Roots.  She is obsessed with growing flowers and pushing the limits of what can be grown in her zone 3b garden.  She also loves to grow tomatoes, but oddly enough, dislikes eating them raw.

Comments

  1. Janice Staniec says

    July 5, 2018 at 9:32 am

    Be careful when watering from a rainbarrell in excessive heat - if it happens to be in the sun the water can get extremely hot.
    Reply

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Welcome!

Hi, I'm Kristen and I help new gardeners learn to grow their own vegetables and beautify their yards. I also share recipes that use all that delicious garden produce. Grab a coffee (and your gardening gloves) and join me for gardening tips, simple recipes, and the occasional DIY, all from the lovely city of Saskatoon, Saskatchewan.

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Hi, I’m Kristen and I help new gardeners learn to grow their own vegetables and beautify their yards. I also share recipes that use all that delicious garden produce. Grab a coffee (and your gardening gloves) and join me for gardening tips, simple recipes, and the occasional DIY, all from the lovely city of Saskatoon, Saskatchewan.

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