Quassia

Marijuana Horticulture

by Jorge Cervantes

Ingredients – Quassia is made from a subtropical South American tree, Quassia amara, and the tree-of-heaven, Ailanthus altissima.

Controls – Soft bodied insects including aphids, leaf miners, and some caterpillars.

Mixing – Available in the form of bark, wood chips, and shavings. Soak 6 ounces of chips per gallon of water for 24 hours. Afterward, boil for two hours. Add a potassium based soap to increase effectiveness. Strain and col before spraying.

Application – Spray on foliage until saturated.

Persistence – Two to five days on the surface of plants.

Forms – Bark, wood chips, and shavings.

Toxicity – Safe for mammals and possibly beneficials.

Safety – Wear a mask and gloves.