Are Plants Safe From An Application Of A Roof Moss Control That Contains Ammonium Fatty Acids? Specifically, Fir Trees, Rhododend

Question

ons, yew shrubs planted near the house…concerned with over spraying and runoff the roof. “Moss Out” by Lilly Miller is the roof moss control.

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Answer 1

In short, no. Not unless you take some precautions. I'd be very careful to spray at a time when it will not rain for several days, just to be safe. Keep from overspraying, and cover your shrubs if it is possible in your situation. If you can put tarps down underneath the spray area, it may help some.