Ask Ed Marijuana Grow Tip #18: Powdery Mildew

Suffering from powdery mildew? That’s that white, powdery growth on top of the leaves—it almost looks like flour– it can kill your plants. Here is the simplest way of getting rid of it: -Go to your local garden shop, or nursery, and buy a bottle of potassium bicarbonate – Mix an ounce of potassium bicarbonate [...]