White Powder on Rose Foliage - Knowledgebase Question

Salem, IN
Avatar for pam81
Question by pam81
March 20, 1998
My miniture rose has what looks like a fine dusting of powder on its leaves. What is it and how can I get rid of it?

Answer from NGA
March 20, 1998
Sounds as though your rose has powdery mildew, a fungal disease. It is quite common on all types of roses. Try using a homemade baking soda/oil spray: mix 1 tsp. baking soda and 2.5 tsp. summer oil (a lightweight horticultural oil) in 1 gallon of water. Spray this once per week, covering both upper and lower leaf surfaces. Also, keep your roses healthy through proper care, since they'll be more resistant to disease. A sunny location, good air circulation all around the plant, and ample moisture are essential. You can remove the leaves affected with powdery mildew so it won't spread to healthy leaves.

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

( No account? Join now! )

Today's site banner is by RootedInDirt and is called "Amazing Grace Phlox"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.