Black spot is the most common rose disease throughout the world, and it’s not pretty. The good news is that black spot is preventable in most cases and if your bushes already have this disease you can fight it.

What is it? The name is pretty self explanatory. Black spot is a fungus that shows up as black lesions on both the upper and lower surfaces of leaves. If your roses aren’t treated they’ll weaken and weaken as leaves turn yellow and drop off, which causes new leaves to surface, which in turn drains your entire bush of important food reserves. …read more