Water

Marijuana Horticulture

by Jorge Cervantes

Ingredients – A cold jet of water – preferably with a pH between 6 and 7 – blasts insects, spider mites, and their eggs off leaves and often kills them. Hot water vapor and steam also work as a sterilant.

Controls – A cold jet of water is an excellent first wave of attack against spider mites, aphids, and other sucking insects. Steam controls spider mites, insects, and diseases on pots, growing medium, and other grow rm surfaces.

Caution – Avoid spraying fully formed buds with water. Standing water in or on buds promotes gray mold. Do not apply hot steam to foliage.

Mixing – None.

Application – Spray the undersides with a jet of cold water to knock off sucking spider mites and aphids. Apply water as a mist or spray when predatory mites are present. The extra humid conditions impair the pest mite lifecycles and promote predatory mite health. Rent a wallpaper steamer. Get it cooking, and direct a jet of steam at all grow room cracks and surfaces.

Persistence – None.

Forms – Liquid, steam vapor.

Toxicity – Not toxic to mammals, fish, and beneficials.

Safety – Do not spray strong jet of water in eyes, up nose, or into other body orifices.