Roses do not have thorns; they have prickles. But there ARE “thorns” in the rose garden. Their names are botrytis, black spot, rust, downy mildew, anthracnose and cerospora leaf spot. They are all ...

Question: You recommended a fungicide for an orange rust control on plumeria. The rust fungus seems like a natural occurrence, especially as the leaves decline in the fall. I have developed the ...