December 23, 2024

VIDEO: Garden Heatwave: How to Care for Heat-Stressed Plants


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Extreme summer heat can be as exhausting for our plants as it is for us, but you can make life easier for them by deploying a few simple strategies.

By using smart watering techniques, providing shade and removing other stressors you can help keep those harvests coming, even during very hot, dry weather.

In this short video we’ll share five tried and tested ways to take the stress out of the heatwave for your plants.

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27 thoughts on “VIDEO: Garden Heatwave: How to Care for Heat-Stressed Plants

  1. Nice video, I disagree with only watering in the morning however. If your soil is well drained and its structure is loose loamy type soil, as mine is, watering in the evening is actually better as it encourages roots to go deeper where even in brutally hot dry climates like ours, there is moisture. In fact, my Spireas get watered once a month and even then only if I remember! Veggies such as tomatoes especially are HUGE nitrogen hogs so side dressing them regardless of weather is essential, and over-watering them actually causes spindly growth with lots of unproductive branches, I give them a deep, deep drink via ground soak hoses once a week, and my peppers a little more because their natural habitat is humid, not dry like here in Utah. And keep in mind sometimes when tomato leaves curl up it may be an Aphid infestation, turn the leaves over to check, and if so get some ladybugs, they eat several times their weight in Aphids. It's really all about knowing which plants needs more, and which plants need less water, droopy plants are thirsty, plain and simple, but if you live in a dry climate and have WELL DRAINED SOIL, hold off to the evening and give them a nice deep drink to encourage root depth, remember slow soaking is your friend, it cuts evaporation and allows the water to penetrate soil that has isolated roots so that the water runs off and does not benefit the plant.

  2. Thanks, I couldn't figure out for the life of me what was happening to my green beans. Dropping their flowers answers that even tho I 'thought' I was watering enuff.

  3. Long time fan, first time commenting – I hail from Sunny South Africa and I love GrowVeg! Your tips are always helpful, i love making use of partial shade nets or planting big bushy crops next to smaller vegetables that may need more shade. I love growing little rows of lettuce and flanking them by rows of sweet peas. The two just compliment each other while growing. I am also a big fan of using chille plants as little bushy borders for my raised beds as I've read they're supposed to improve drainage in the soil and I love those eye-catching chille flowers, they always attract beneficial bugs to the raised beds. It gets incredibly hot around here, especially in the summer peaks. I will be putting your advice to good use this season!

  4. I'm a Swede living in a very hot part of Canada. We are classed as 4b and have fridgid -40 winters and summers as hot as 40c. Most of the growing season starts as hot as 25c (We have it already). Do I not fertilise them at all then since it's mostly over 30c at any given day? Or do I just focus on compost and aged manure in the soil before the growing starts?

  5. I live in AZ and the weather has been 114/115 for almost a week. I use a shade cloth and water as needed, but my pepper has dropped all of leaves. I pruned it down and brought it indoors out of the heat. Is there anything I can do to nurse it back to health? Should I keep it inside for a few days or should I bring it out in the mornings for a few hours?

  6. As an Aussie listening to an Englishman complain about heat made me laugh. In 2002 I recorded 54C in the shade. We get some scorchers. I always use a mister and a shade tunnel (shade cloth over a matrix of PVC conduit that bends into a C shape and press fits into the garden bed) and leaky feeders for the ground. But even that didn't work last summer. Was hoping to get ahead of it but unfortunately this is like children's level knowledge. 🙁

  7. Just planted our first little garden with the kids here in Sydney this week and it's a scorcher this weekend, right now it's 41 degrees (that's about 106 Fahrenheit) and a gusty hot wind like dragon's breath – and it isn't even summer yet. Thanks for the tips, hope they're going to be alright.

  8. It's only May and temps here are close to 90°F. It's usually only in the 70s. My tomatoes are in a slightly raised bed and I'm worried about them. I saw your video and I'll have to make shade for them. I put 12 plants aside to give to my daughter and they're doing really well. They're only getting the morning and early afternoon sun. I waited forever for the temps to get warm enough and now that I planted, we have a heat wave! Thanks

  9. I am checking this out ahead of the extreme heatwave that we will be having next week in the UK, expected to be 39C on Tuesday! My lettuce, tomatoes and peppers will be really suffering

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