Marijuana leaf fungus is something that can wipe the crop out, which means after all the hard work growing the ganja there, will be no pot to smoke. Fungus is one of the dangers that is known as botrytis, which is also known as grey mold.
This is a mold that will develop after the buds are dense and will invade the buds near the core of the flower near the stem.
This grey mold will move quickly and destroy the buds on the leaf and if it is not stopped it will destroy each of the cannabis plants. Growers that have tried saving the marijuana harvest by placing the leaves and buds in the freezer.
This does not stop the fungus from continuing to rot the marijuana leaf and buds.
This is a threat to the marijuana leaf that is not as easy to detect as other types of marijuana leaf problems