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Colorado

What could be causing new leaf growth to be curled out at the edges. Older leaves so far are not curling. Any help would be great. Thanx

7/7/2021 12:28:19 PM

Grittyville, WA

Picture? Low calcium/ drought/stress/poor roots... these cause weakness and curling at the vine tips. Assuming it's not pesticides... ot could be a ph or water issue, or nutrients. It's a struggle to pinpoint because these things all depend on each other and one problem can resemble another.

7/7/2021 4:19:24 PM

Grittyville, WA

For example I had a calcium issue but it was really a phosphorous issue... roots were struggling to grow well due to low phosphorous. (I think there's enough calcium in my soil.) The same thing can happen with uneven watering or wrong ph... the nutrients might be there but if it gets too dry or locked in by the ph then the plant cant pull them out.

7/7/2021 4:24:47 PM

what has been sprayed recent on leafs

7/7/2021 5:48:53 PM

Colorado

Thanx for responses. I went back to my soil test and I don’t think calcium is a problem. Feet is good and no drought problem. I was spraying liquid fertilizer over top and washing it to the ground with over head watering. An going to cease that and feet under leaves. My other two plants were treated the same and no problem. This plant has pretty much shut down.

7/9/2021 12:02:36 PM

Bethlehem CT

Have you looked on the underside of the leaves for aphids?

7/10/2021 8:59:23 AM

Colorado

Have looked under leaves for squash bugs and any egg clusters of any kind. Could not find anything. The leaves are curling in an upward arc.

7/11/2021 9:38:10 PM

Bethlehem CT

Interesting.

7/12/2021 7:00:11 AM