Powdery mildew in 102degF heat?


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This cucumber plant has a history of powdery mildew... somehow it miraculously has not spread to the cantaloupe plant next to it. More miraculously though... is its return after I deep watered it one day. My first developed cucumber had a tiny end and big size at the stem, and I read it was due to lack of water. So I gave it a solid watering and then in a couple days I saw this. Can this mold really survive in 102 degree F weather or am I seeing something else? Maybe leftover insecticidal soap from spraying neem?
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And here's the cucumber I saw that made me deep water the plant in the first place...
D597DDB8-D309-4B48-9339-4B47592AB798.JPG
 
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That is not from lack of water. It is from improper pollination. As for the mildew, I don't think that is mildew because for one it doesn't look like it and number two powdery mildew grows best in 70F-80F and it is way above that. I don't know what it is for sure but it looks more like hard water stains than mildew. But, to be on the safe side mix 2 heaping tablespoons of baking soda into a pint of water and spray.
 
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Joined
Jun 15, 2022
Messages
82
Reaction score
20
Location
Houston, Tx
Hardiness Zone
9a
Country
United States
That is not from lack of water. It is from improper pollination. As for the mildew, I don't think that is mildew because for one it doesn't look like it and number two powdery mildew grows best in 70F-80F and it is way above that. I don't know what it is for sure but it looks more like hard water stains than mildew. But, to be on the safe side mix 2 heaping tablespoons of baking soda into a pint of water and spray.
Awesome will do. And good to know about the watering… this bed is very stable water-wise so I was very surprised to read that, but I probably should’ve looked up more pictures to be sure. Thanks Chuck!
 

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