What to do about white “powdery” mold on leaves of cannabis plant?

Question: My balcony herb is getting covered in a white “mold” or powdery substance on the leaves. Can you help me? In flower now 3 weeks. Powder just started but moving fast.

WPM causes white powdery patches on leaves or stems that may resemble flour

Answer: It’s called ‘White Powdery Mold’. Wipe off your leaves using water. Afterward, make sure you have good air circulation moving over your plants(like with a fan). Get SM-90. Mix 1 part SM-90 to 5 parts water and spray your leaves right before lights out time.

Learn more about white powdery mold

 

 

Return to Top of Page