Before Making Hash Marijuana Horticulture by Jorge Cervantes Make sure your plants are as clean as possible. Any oil-based residues on leaves will show up in the hash. For example,…

Hash and Oil Making Marijuana Horticulture by Jorge Cervantes Hashish is the connoisseur’s smoke. Hashish, also called hash, is the resin heads of glandular trichomes that are collected, pressed together,…

Viruses Marijuana Horticulture by Jorge Cervantes Identify Viruses are still a mystery. They act like living organisms in some instances and nonliving chemicals on other cases. They must enter marijuana…

Verticillium Wilt Marijuana Horticulture by Jorge Cervantes Identify Lower leaves develop chlorotic yellowing on margins and between veins before turning dingy brown. Plants wilt during the day and recoup when…

Sooty Mold Marijuana Horticulture by Jorge Cervantes Identify Black sooty mold is a surface fungus that grows on sticky honeydew excreted by aphids, mealybugs, scale, whiteflies, etc. Sooty mold is…

Root Rot Marijuana Horticulture by Jorge Cervantes Identify Root rot fungi cause roots to turn from a healthy white to a light brown. As the rot progresses, roots turn darker…

Powdery Mildew Marijuana Horticulture by Jorge Cervantes Identify First indication f infection is small spots on the tops of leaves. At this point the disease has been inside the plant…

Green Algae Marijuana Horticulture by Jorge Cervantes Identify Slimy green algae need nutrients, light, and a mist surface on which to grow. These algae are found growing on moist rockwool…

Fusarium Wilt Marijuana Horticulture by Jorge Cervantes Identify Fusarium wilt is most common in warm grow rooms and greenhouses. Recirculating nutrient solutions above 75F creates perfect conditions for Fusarium. The…

Foliar Spots and Fungi Marijuana Horticulture by Jorge Cervantes Identify Leaf and stem fungi, including leaf spot, attack foliage. Brown, gray, black, or yellow to white spots or blotches develop…

Blight Marijuana Horticulture by Jorge Cervantes Identify Blight is a general term that describes many plant diseases which are caused by fungus, most often a few weeks before harvest. Signs…

Downy Mildew Marijuana Horticulture by Jorge Cervantes Identify Sometimes called false mildew, downy mildew affects vegetative and flowering plants. Young, succulent foliage is a favorite starting place. Powdery mildew develops…

Damping-off Marijuana Horticulture by Jorge Cervantes Identify This fungal condition, sometimes called Pythium wilt, is often found in soil and growing mediums. It prevents newly sprouted seeds from emerging, and…

Gray Mold Marijuana Horticulture by Jorge Cervantes Identify Gray mold is the most common fungus that attacks indoor plants and flourishes in moist temperate climates common to many grow rooms.…

Fungus and Disease Control Marijuana Horticulture by Jorge Cervantes Prevent fungus by controlling all the factors contributing t its growth: remove hiding places, keep room clean, lower humidity to 50…