Newly Registered
Posts: 1
Joined: Wed Jul 15, 2009 10:50 pm
Location: Cearfoss, Maryland

summer squash leaves

If I have a white powdery substance on my squash leaves but nothing on the actual squash....is it still okay to cook and eat the squash or not?

User avatar
Green Thumb
Posts: 631
Joined: Mon Jun 22, 2009 2:20 pm
Location: Rural Ottawa, ON

It's probably powdery mildew, you can treat the leaves with a 1:4 (up to 50:50) mix of water & milk as a fungicide. There was a thread about eating the veggies, I'm not sure.
Vanessa raising organic vegetables, livestock, wildflowers, and family in zone 5A.

User avatar
Senior Member
Posts: 139
Joined: Mon Jun 01, 2009 1:00 pm
Location: Eastern PA

are you sure its powdery mildew? Zuchuini and squash leaves turn silverish/white on the veins of the leaves, its normal.

Now if the whole leaf is covered with a powdery color then its mildew, if its just on the veins its normal.

User avatar
Posts: 28170
Joined: Thu May 01, 2008 11:21 pm
Location: Zone 6, NJ (3/M)4/E ~ 10/M

Unless the squash are extremely small, you can always pick them before the mildew has the chance to do too much damage. The mildew/mold leaves sunken spots on the skin that turn yellow/brown. If it's only on the surface, then wash with some salty water. You can even pick the baby ones with flower attached -- just like in gourmet restaurants. :wink:

My first zucchini started off at about 3" when it flowered, and for most varieties, the recommended size for picking is 6"~8". Yesterday, it was about 4". Matter of fact, I'd better go check how big it is NOW. 8)

Return to “Vegetable Gardening Forum”