Found these spots of 3 of my Petit Pearl plants-what is it and more importantly, other than cutting off the leaves I see with the spots on it, is there anything else I can do at this point?
I am at the point where I need to construct my trellis system for my small backyard (26 plant) Petit Pearl "vineyard." Two specific questions that seem to have too many potential answers that I am struggling with. 1) What type of system should I use? Information I have gleaned has me leaning...
