Vegetables and Fruit forum→Zucchini Help! Brown Spots on Leaves - Please Help!

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drewyyz
Jun 9, 2020 6:04 PM CST
Hello,

Totally new to gardening and I would really appreciate your advice

I'm growing a zucchini in a pot. I've noticed some leaves turning yellow and then they get brown spots on them (see pictures). The brown spots were crunchy. I've cut off those leaves, but now the edges of the remaining leaves are turning dark brown. It's just starting on the edges, and if you look closely, there is some white stuff (powdery mildew)? But it's very, very little white stuff. I'm mainly concerned about what's making the leaves so yellow and brown! I've already cut quite a few off...

I think my watering is adequate and I never let the put get dry, but at the same time, it is never soaking, dripping wet. There is good drainage at the bottom.

Any advice is greatly appreciated.
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ElPolloDiablo
Jun 10, 2020 1:34 AM CST
You mentioned growing these zucchini plants in pots. If so it's most likely a water issue, perhaps not enough drainage or having the bottom third of the potting compound dripping wet while the rest is bone dry.
Also remember that if your plants have been in production for 30 days or so now, leaves will start to die out as the stem lenghtens and production of new flowers move down to it. There are actually some zucchini cultivars that require being staked during growth like indeterminate tomatoes.
The Saviour.

drewyyz
Jun 10, 2020 9:45 PM CST
ElPolloDiablo said:You mentioned growing these zucchini plants in pots. If so it's most likely a water issue, perhaps not enough drainage or having the bottom third of the potting compound dripping wet while the rest is bone dry.
Also remember that if your plants have been in production for 30 days or so now, leaves will start to die out as the stem lenghtens and production of new flowers move down to it. There are actually some zucchini cultivars that require being staked during growth like indeterminate tomatoes.


Thank you so much! I have harvested 4 zucchinis from it already. Do you think it's too late for me to transplant them into the ground? I was going to keep it in a pot as my garden is pretty full, but I can pull up some ground cover plants and put it in the ground. But I don't know if it's too late in the season or if it's bad to put a potentially sick plant in the ground... Thank you for your help.

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ElPolloDiablo
Jun 12, 2020 10:21 AM CST
drewyyz said:

Thank you so much! I have harvested 4 zucchinis from it already. Do you think it's too late for me to transplant them into the ground? I was going to keep it in a pot as my garden is pretty full, but I can pull up some ground cover plants and put it in the ground. But I don't know if it's too late in the season or if it's bad to put a potentially sick plant in the ground... Thank you for your help.


If you have a mature compost heap you can just plant in there.
I don't know how hold that plant is, but you'd better remember most cultivars last about 60 days from when the first zucchini is harvested. The plant will live to the end of the season but will become beyond ugly, will have extremely limited yield and, much more critically, become a magnet for powdery mildew, so weigh your options carefully.
The Saviour.

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