The top leaves on my basil are developing wet black spots. It looks like
wet black paint.
It started on the California Wonder peppers I started from seed. The lower
leaves started with the wet black spots, and when the leaf was about halfway
black it would fall off the plant. I immediately pulled up the first one
and put it and all the mulch around it in a sealed plastic bag and took it
away. I have sprayed with both daconil and maneb and a copper mixture
recommended by a friend. It spread to all those peppers and then to the
jalapenos, the red peppers, and the yellow peppers. I did actually get
three or four green fruits before the plants succumbed to the disease.
It has now spread to the basil and to the four o'clocks on the edge of the
garden. I pulled up the four o'clocks, etc.
The basil is interplanted with my cucumbers and is near my eggplants and I
am afraid they are next.
I use drip irrigation, but that does not help so much when you get too much
rain, and we had nearly triple our normal rainfall in June.
I have looked at the various online pictures and cannot find anything that
looks like this.