Answer: The white film is most likely powdery mildew. You can prevent it with sprays of a labeled product such as neem oil, potassium bicarbonate or bayleton.
« Click to go to the homepage
» Ask a question of your own
Q&A Library Searching Tips
[ Join now ]
© 1972 - 2016 National Gardening Association
Times are presented in US Central Standard Time
Today's site banner is by Paul2032 and is called "Coreopsis"