A type of infection that affects cannabis plants Verticillium wilt is a type of infection that affects cannabis plants and which is the result of soils that are poorly drained. Typically, this fungal infection has woody plants predisposed to getting affected, and especially plants which tend to have stressed roots. For this reason, it is very important that farmers keep a close eye on their plants in order to identify such problems immediately they occur. Knowing what to be on the lookout for ...