This morning my zucchini plants have black bugs and black slime on their leaves. What could be causing this and how to get rid of?
Certified GKH Gardening Expert
You may have a slime mold or sooty mold, which is feeding off the honeydew produced by the bugs. The bugs are likely aphids. This article will help with them:
Once the aphids are controlled, the slime should go away on its own, but you can get rid of it faster by treating the plant with a fungicide.