Sulfur

Marijuana Horticulture

by Jorge Cervantes

Ingredients – Sulfur. Mixed with lime, sulfur is more toxic to insects but more phytotoxic to plants.

Controls – Centuries old fungicide is effective against rusts and powdery mildew.

Caution – Do not apply in temperatures above 90F and less than 50 percent humidity. It will burn foliage.

Mixing – Follow directions on package.

Application – Apply in light concentration. It is phytotoxic during hot, 90F, arid weather.

Persistence – It stays on foliage until washed off.

Forms – Powder.

Toxicity – Not toxic to honeybees, birds, and fish.

Safety – Wear a mask, gloves, and safety goggles; cover exposed skin and hair. Avoid skin, eye, ear, and nose contact. Irritates eyes, lungs, and skin.