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Yellow squash leaves  RSS feed

 
trinda storey
Posts: 128
Location: kent, washington
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My new squash leaves are yellow? Low nitrogen?
 
James Freyr
pollinator
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Location: Middle Tennessee
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Low nitrogen is possible. Soil pH could be off. Do you have a picture?
 
Casie Becker
gardener
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Location: Just northwest of Austin, TX
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Lots of things can cause squash leaves to yellow. Usually it means my squash plant is succumbing to squash vine borers or powdery mildew. Did this come on suddenly? Do you have some pictures?

The second and third pictures down on this page https://www.peakprosperity.com/wsidblog/86005/how-control-squash-vine-borer are really good images of the kind of damage you'd see on the vine close to the yellowing leaves if they're the culprit.

Yellowing from powdery mildew is preceded by the powdery appearance of the leaves. It's pretty distinctive.

Outside of these two things which I have so much experience of, there are other pests and diseases.

In the case of a nitrogen deficiency, what I've seen in other plants is that the yellowing comes on gradually. How quickly have these leaves changed color?

edit: their/they're
 
s. ayalp
Posts: 48
Location: istanbul - turkey
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dog greening the desert hugelkultur
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no disease, no borers?
then
just pee on it
 
Amit Enventres
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Location: Ohio, USA
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Nitrogen is usually yellow older leaves. Check out nutrient deficiency chart on an image search. Manganese and sulfur are new leaves yellow, generally. Usually micronutrient deficiencies are actually a sign of a pH issue. I'd look into some Epsom salt. If your flowers are also falling off/fruit rotting from the blossom, or bud issues, then you're probably talking a calcium deficiency. You can get a soil test to know for sure. Good luck!
 
trinda storey
Posts: 128
Location: kent, washington
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I just planted them from starts in greenhouse. My ph has been low. It was a sudden occurrence
 
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