Fungi and Disease Prevention Marijuana Horticulture by Jorge Cervantes Prevention is the first step and the true key to fungi control. Cover the carpet with white Visqueen plastic. If mold…

Fungi and Diseases Marijuana Horticulture by Jorge Cervantes Fungi are very primitive plants and do not produce chlorophyll, the substance that gives higher plants their green color. Fungi reproduce by…

Whiteflies Marijuana Horticulture by Jorge Cervantes Identify The easiest way to check for the little buggers is to grab a limb and shake it. If there are any whiteflies, they…

Thrips Marijuana Horticulture by Jorge Cervantes Identify More common in greenhouses than indoors. These tiny, winged, fast moving little critters are hard to see but not hard to spot. From…

Slugs and Snails Marijuana Horticulture by Jorge Cervantes Identify Slugs and snails are soft, slimy white, dark, or yellow, and occasionally striped. they are 0.25-3 inches long. Snails live in…

Root Maggot Marijuana Horticulture by Jorge Cervantes Identify Both the seed corn maggot and the cabbage maggot attack cannabis roots. The seed corn maggot is 1.5 to 2 inches long.…

Nematodes Marijuana Horticulture by Jorge Cervantes Identify Of the hundreds and thousand of species of microscopic nematodes – sometimes, big ones are called eelworms – a few are destructive to…

Mealybugs and Scales Marijuana Horticulture by Jorge Cervantes Identify Mealybugs Somewhat common indoors, these 0.08-0.2 inch oblong, waxy white insects move very little, mature slowly, and live in colonies that…

Fungus Gnats Marijuana Horticulture by Jorge Cervantes Identify Maggots, larvae, grow to 4-5 mm long and have translucent bodies with black heads. Winged adult gnats are gray to black, 2-4…

Leaf Miner Marijuana Horticulture by Jorge Cervantes Identify Adult leaf miner flies lay eggs that hatch into one-eighth-inch long maggots. You seldom see the maggots before you see the leaf…

Leafhoppers Marijuana Horticulture by Jorge Cervantes Identify Leafhoppers include many small, 0.125 inch long, wedge shaped insects that are usually green, white or yellow. Many species have minute stripes on…

Caterpillars and Loopers Marijuana Horticulture by Jorge Cervantes Caterpillars and loopers leave plenty of droppings on the plant. The droppings accumulate in between buds. Droppings fall out when the buds…

Beetle Borers Marijuana Horticulture by Jorge Cervantes Identify Larvae from several boring beetles tunnel or bore into stems or roots. Look for their entry hole and dead growth on either…

Bees and Wasps Marijuana Horticulture by Jorge Cervantes Identify Bees and wasps that sting are usually from a half inch to more than an inch long. Most have yellow stripes…

Aphids Marijuana Horticulture by Jorge Cervantes Identify Aphids, also called plant lice, are about the size of a pinhead. They are easy to spot with the naked eye, but use…