Bordeaux Mixture

Marijuana Horticulture

by Jorge Cervantes

Ingredients – Water, sulfur, copper (copper sulfate) and lime (calcium hydroxide).

Controls – Most often used as a foliar fungicide. Also, controls bacteria and fends off other insects.

Caution – Phytotoxic when applied to tender seedlings or foliage in cool and humid conditions.

Mixing – Apply immediately after preparing.

Application – Agitate the mixture often while spraying so ingredients do not settle out.

Persistence – Until it is washed from foliage.

Forms – Powder and liquid.

Toxicity – Not toxic to humans and animals, but somewhat toxic to honeybees and very toxic to fish.

Safety – Wear a mask, gloves, and long sleeves.