Rose - Knowledgebase Question

fremont, ca
Question by anu06gupta
August 27, 2007
I have pink rose plant in my garden it has white deposit like a powder under the flower. How to take care of that problem please let me know what I can do about it.

Answer from NGA
August 27, 2007


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. A commercial organic alternative is Soap Shield Fungicidal Soap from Gardens Alive ( Also, keep your roses healthy through proper care, since they'll be more resistant to disease. Provide full sunshine, good air circulation all around the plant, and ample moisture. You can remove the leaves affected with powdery mildew so it won't spread to healthy leaves.

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