Gray Mold – Botrytis Cinerea

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Gray Mold – Botrytis Cinerea

Botrytis on Marijuana bud rot

There are over 200 species of Botrytis, a very common greenhouse humidity disease. In conditions of high relative humidity, botrytis penetrates the plant and develops. It can be found on leaves, stems, flowers, and fruit. The tissue on which it develops becomes dark and sometimes soft, due to the death of the host cells. Botrytis infections can be recognized by the appearance of graydusty spores with a velvety appearance. In some flowers, light colored spots with a dark brown ring can indicate mold infection. Once the infection is visible to the naked eye, the mold has already penetrated the plant and chemical treatments often will not have effective results. This disease is a major problem for most greenhouse growers.

Host Range: affects almost every type of greenhouse crop!

Gray spores on eggplant

Spores on tomato stem

Botrytis symptoms on cannabis flower

Botrytis generates white ring on tomato fruit

by golglocki , CC – BYSA3.0

Gray spores at the base of campanula flowers

Damage on tomato stem

Infected cannabis flower

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