Q.What Is Happening To My Zucchini Plant?
The same thing is happening to my cucumber. There are a few ants, but no other bugs that I can find.
Certified GKH Gardening Expert
It appears to be overwatering. Sometimes pH swings can do this, but it appears to be the start of root rot.
Make sure that your container allows ALL water to exit. Standing water, saturated soils, and no drainage will cause rot.
I would treat with a fungicide, and make sure that the plant only receives water when the soil is completely dry down to about 2 or 3 inches. Make sure that there is plenty of drainage, and that there is never standing water. All excess should be able to leave the container, freely.
Here are some articles that will help:
https://www.gardeningknowhow.com/edible/vegetables/zucchini/zucchini-container-care.htm
https://www.gardeningknowhow.com/edible/vegetables/cucumber/cucumbers-in-containers.htm
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
