Does This Look Familiar?
Black Spot on Roses

Roses
used to mean black spot. There was no getting around it without a lot
of spraying and maintenance. Is there an easier way? Well, growing
resistant rose varieties is always a smart idea. But now there’s even
more help in the form of Messenger®.
Messenger, an almost accidental discovery, is making a big splash in
gardening circles. It’s marketed as a plant health activator. What does
that mean? Well, Messenger has the ability to fool your plant into
thinking it’s being attacked by a pathogen, without actually hurting
it.

More here

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