Gloria from Catoosa, Ok writes
Bayer Advanced Disease Control for Roses, Flowers & Shrubs Concentrate is not labeled to be applied to the lawn. There are many different factors that can cause black spot on a lawn. A few are it is too dry, moss, fungus, or blight. Please have this area identified, so that we can make the best recommendation. You can contact Your Cooperative Extension Office and speak with the Master Gardner.
Answer last updated on: 05/13/2014