I just posted about Blackspot prevention in the Introduce Yourself topic and I thought it would be beneficial and informative to find out how this rose community battles/prevents Blackspot.
Here is what I posted:
A simple thing I have done to prevent (or lessen) Blackspot is to clean out the very bottom of the bush. Usually there is a lot of non-productive growth located near the bud union and very low on the larger canes. I recommend removing all foliage that is within about 6 to 8 inches from the soil. This will improve air flow where the rose needs it most. Some rosarians don’t like this look (i.e., rose has “bare legs”) but it will help prevent Blackspot I promise you.