Downy Mildew on Roses

Downy Mildew

on Roses

Description: Downy mildew affects roses throughout the U.S.

Infection begins on young plant growth. Leaves develop

dark purplish to dark brown spots. Symptoms may resemble

burns caused by pesticide toxicity. Humid, cool conditions

favor downy mildew infection.

Solution: If downy

mildew has been a problem in the past, begin spraying

Soap-Shield® Fungicidal Soap

when new spring growth emerges. Repeat every 7-10 days

for as long as needed to control disease.

 


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