1
point
Is this powdery mildew on my zucchini?

Squash    MA, USA

I have two zucchini plants growing in a large, wide container on my balcony. They're rather healthy and vigorous. There was a third, smaller one which I pulled to thin out the crowding to give the bigger plants a better chance and it had even more silvery marks on its leaves.

I sprayed them both with diluted milk this morning, just in case.


Posted by: extinct (2 points) extinct
Posted: May 13, 2015




Answers

0
points
Hi, it looks like a nutritional deficiency to me, but definitely not mildew. Probably magnesium. Apply any foliar fertilizer containing macro and micronutrients and report back ;)


Posted by: Guillermo (1 point) Guillermo
Posted: May 13, 2015


extinct commented,
Thank you. I've applied a fresh batch of Neptune's Harvest kelp and fish fertilizer. Hopefully that will help with any deficiencies. I'll report back in a few days to a week with any progress.
about 5 years ago.



0
points
It doesnt look like powdery mildew. You can expect to see and feel the powdery part which is the fungal growth. It looks like it might be silvering, which is a normal varietal trait. See another question here https://www.plantvillage.com/posts/10...


Posted by: David Hughes (54 points) David Hughes
Posted: May 13, 2015


extinct commented,
That's something to consider, for sure. The breed of zucchini is dark star, not sure if they're known for silvering or not as this is my first time growing zukes myself.
about 5 years ago.



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