Whenever a little water is spilled on the floor in my grow, after it has dried I will find a very lose black powdery type of substance there. Is this a type of mold/mildew? Can it get in the plants?
Bulster Reviewed by Bulster on . Black powdery substance... Whenever a little water is spilled on the floor in my grow, after it has dried I will find a very lose black powdery type of substance there. Is this a type of mold/mildew? Can it get in the plants? Rating: 5