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Moscow, Russia

Hello! I need help with tips and ideas. A member of our club has a problem with a giant pumpkin plant. In one day, literally overnight, the leaves turned yellow, young and new leaves. It looks like there are some missing elements or like the version that this is a virus. Maybe someone had such a thing? What can be done or better to remove such a plant? Photos of the plant in my diary.

There are other plants growing nearby and they are fine. 

The weather is cool. Especially at night. And it rains a lot. Everyone has the same diet, usually organic fertilizers. 

The leaves don't wither by themselves, they just turn yellow.

I would be grateful for any information!

http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=361543

[Last edit: 08/01/26 6:42:33 AM]

8/1/2026 6:34:57 AM

Grittyville, WA

It could be the plant simply ran out of magnesium or has some other metabolic issue. A transient affect from the sustained cool wet weather. I saw the pics. There could also be some minor shock to the roots. A disease that knocks out 1/3 of the roots might show up as discoloration but not be enough damage to wilt the plant. But these are guesses. Final guess would be a developmental issue that didn't show up until now. Maybe a virus or infection could trigger this. I dont know.

8/1/2026 12:11:58 PM