Beginner Gardening: What’s wrong with this zucchini plant?, 2 by Earlywormfarms

Earlywormfarms wrote:
Hi all! I’m new to the forum and am hoping someone can help me figure out what is wrong with my zucchini plant. I have three zucchini’s in containers on my back porch and three in raised beds. They were all planted from the same pack of seeds, on the same day, and have had the same experience. High quality custom-mixed soil that was separately mixed for beds vs. containers.

One of the plants has started to have yellow, then brown / shriveled leaves. There are a few small spots of white on the leaves. It affected all of the larger leaves but seems to have left the newer growth unaffected. This happened in my garden last year too. Any ideas what this is and how I deal with it? Would love to fix it before it affects more plants. I’m in zone 5B.

This message was edited Jul 4, 2020 9:28 AM