Posted 10/27/2025 09:50 (#11414668 - in reply to #11412306) Subject: RE: Squash plants damage
Gopherguts - 10/25/2025 10:41
That is powdery mildew.
Triazole fungicide + chlorothalonil or oxidate are low cost treatments. Strobilurin fungicides can also work unless resistant strains are present.
It is not powdery mildew. Most likely Downey mildew.