Marijuana Horticulture: The Indoor/Outdoor Medical Grower's Bible

larvae with a high pH in their guts.
    B. thuringiensis var. san diego (Btsd) targets the larvae of Colorado potato beetles and elm beetle adults and other leaf beetles.
    B. thuringiensis var. tenebrionis (Btt) is lethal to Colorado potato beetle larvae.
    B. cereus helps control damping-off and root-knot fungus. It flourishes in water-saturated mediums and promotes beneficial fungus that attacks the diseases.
    B. subtilis is a soil-dwelling bacterium that curbs Fusarium, Pythium, and Rhizodonia that cause damping-off. It is commercially available under the brand names Epic®, Kodiac®, Rhizo-Plus®, Serenade®, etc. Soak seeds and apply as a soil-drench.
    B. popilliae colonize larvae and grub bodies that consume it, causing them to turn milky-white before dying. It is often called milky spore disease. It is most effective against Japanese beetle grubs.
Baking Soda

    Ingredients: Sodium bicarbonate.
    Controls: Powdery mildew.
    Caution: Baking soda kills fungus by changing the pH of foliage surface. It functions as a fungistat, not as a fungicide, that eradicates the organisms.
    Mixing: Saturate in water.
    Application: Spray or dust foliage.
    Persistence: One to three days.
    Forms: Powder.
    Toxicity: None to mammals, fish, beneficials.
    Safety: Wear a mask to avoid inhaling dust.
Bleach, Laundry

    Ingredients: Sodium hypochlorite.
    Controls: Numerous bacteria and fungi.
    Caution: Avoid skin contact and inhalation. Concentrate burns skin and stains clothes.
    Mixing: Dilute 5 or 10 percent solution with water.
    Application: Use as a disinfectant on containers, walls, tools, etc.
    Persistence: Evaporates with little residual in a couple of days.
    Forms: Liquid.
    Toxicity: Toxic to fish, beneficials, and humans if swallowed or gets in eyes.
    Safety: Wear a mask and gloves when handling concentrate. Avoid skin contact and respiration.
Bordeaux Mixture
    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.
Boric Acid

    Ingredients: Available in the form of borax hand soap and dust.
    Controls: Lethal as a contact or stomach poison. Kills earwigs, roaches, crickets, and ants.
    Caution: Phytotoxic when applied to foliage.
    Mixing: Mix borax soap in equal parts with powdered sugar to make toxic bait.
    Application: Set bait out on soil near base of plants.
    Persistence: Avoid getting bait wet as it disperses rapidly.
    Forms: Powder.
    Toxicity: Not toxic to honeybees and birds.
    Safety: Avoid breathing dust.
Bug Bombs
    Ingredients: Often bug bombs are packed with very strong insecticides and miticides, including synthetic pyrethrins that exterminate every pest in the room. They were developed to kill fleas, roaches, and their eggs that hide in furniture and in carpets.
    Controls: According to most bug bomb labels, they kill everything in the room!
    Caution: Use only as a last resort and follow the label’s instructions to the letter.
    Mixing: None.
    Application: Place the bug bomb in the empty room. Turn it on and then leave the room.
    Persistence: Low residual. Persistence is limited to a day or two.
    Forms: Aerosol.
    Toxicity: Read label for details.
    Safety: Wear a mask, gloves, and cover exposed skin and hair.
Copper

    Ingredients: The compounds-copper sulfate, copper oxychloride, cupric hydroxide and cuprous oxide-are common forms of fixed copper used as a fungicide and are less phytotoxic than unfixed (pure) copper.
    Controls: Cray mold, foliar fungus, anthracnose, blights, mildews, and a number of bacterial diseases.
    Caution: Easy to overapply and burn foliage or create a copper excess in plant.
    Mixing: Apply immediately after preparing.
    Application: Agitate the mixture often while spraying, so ingredients do not settle out. Preferred temperature range for application is 65-85°F (18-29°C).
    Persistence: Lasts two weeks or longer indoors, if not washed off.
    Forms: Powder and liquid.
    Toxicity: Toxic to fish. Not toxic to birds, bees,