My zinnias this year are green, had plenty of rain here in Michigan, I've used a fungicide,it's been pretty wet,and have used sevin once,(japanese beatles)I fertilize with fish emulsion. Here's my problem,I first noticed stems with nice big buds bending at the top, stems seem soft, and very few flowers. Nothing had changed much from last year except I did replant in the same place. The plants look healthy. just lots of bent over stems and few blooms.