I think I have leaf mold on my indoor tomatoes, they're all fruiting now with Principe Borghese toms being host to the fungus while San Marzanos show no sign.
I did a lot of research and learned that I should pick out infected leaves and leave room for air circulation. I did that but its still spreading, what worked for you? I'm getting very frustrated and I don't know what to do
*The white powdery substance in the photos is Diotemacious Earth that I dusted for a breif whitefly problem. The sticky webby residue is an organic fungucide I naively sprayed thinking it would take care of the leaf mold.
This is one of the most infected plants, (the only that had whiteflies) I moved it away from the rest and removed all leaves with signs of mold.
I hope I don't have to do this again
The problem started with the whiteflies, could they be the cause of the leaf mold entering my greenhouse?
please help me understand/overcome this problem