Comments on: Gardening in Extreme Heat: What to Do During a Heatwave https://growinginthegarden.com/surviving-a-heatwave-gardening-in-high-heat/ Helping gardeners succeed, even in tough conditions. Wed, 20 Aug 2025 23:27:11 +0000 hourly 1 By: Angela Judd https://growinginthegarden.com/surviving-a-heatwave-gardening-in-high-heat/#comment-6482 Fri, 07 Jun 2024 23:29:16 +0000 https://growinginthegarden.com/?p=30132#comment-6482 In reply to Sharon White.

Good questions. The NPK numbers on that fertilizer are very, they are less likely to burn that way. I would use a half-dose as needed.

]]> By: Sharon White https://growinginthegarden.com/surviving-a-heatwave-gardening-in-high-heat/#comment-6481 Thu, 06 Jun 2024 16:41:48 +0000 https://growinginthegarden.com/?p=30132#comment-6481 Here in southern New Mexico we are currently experiencing a heat wave. 104 yesterday, 6/05. 106 predicted today, 6/6.. Forecast says it will go back into the upper 90’s by Monday, 6/10. My question is WHEN can I fertilize tomatoes and peppers in CONTAINERS? Is upper 90’s considered “over the heat wave”? Last summer we had 100 plus temperatures every day from the third week of June until the first part of August when it cooled down to upper 90’s, but we still had 100 plus temperatures several days of August going into the second week of September.

One suggestion given me was try fertilizing at night when the temperatures will be cooler for a while. (Our night temperatures have been in 60’s and probably will occasionally be in the 70’s during the summer.) Another suggestion given me was just use half strength fertilizer.

I use organic Neptune’s Harvest Tomato & Veg 2-4-2. I also put organic granular fertilizer in the potting mix when I transplanted. Is using the granular counted as “not fertilizing”?

I suppose the bottom line is if I wait until the temperatures drop into the lower 90’s or so I probably won’t be fertilizing until September. This has been confusing for me.

Thank you,
Sharon White

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