Beneficials Used in Cannabis IPM

Predators, parasites, and beneficial microbes work best early. Match the ally to the pest, and do not stack ones that eat each other.

pests ipm

Full book

Aphids and whiteflies

AromaAphidius species turn aphids into brown or black mummies

AromaAphidoletes larvae feed in aphid colonies at night

Example strains

lady beetles lacewings and syrphid larvae often hold aphids without sprays

Aromaparasites are framed as best before a blow-up

buy predator mites suited to your room and release at first stipple

Hypoaspis hunts gnat larvae and other small soil prey

Amblyseius cucumeris, used in large numbers

Heterorhabditis and Steinernema for gnat larvae and thrip pupae in the mix

Orius species take thrips, mealybugs, and scale

caterpillars stop eating after they ingest Bacillus thuringiensis

from Saccharopolyspora spinosa; hits chewers, not sap suckers; caution near honeybees

Trichogramma must go out at the first moth sign

Cryptolaemus; Ryzobius is called out for soft scale

a fungus listed against aphids, mites, thrips, whiteflies, and leaf miners

Bacillus subtilis, Bacillus pumilus, Streptomyces, Gliocladium, Trichoderma, and mycorrhizae

Ampelomyces quisqualis (AQ-10) plus the Bacillus species above

peroxide and UVC in hydro kill these allies along with pathogens

Paraphrased from Ed Rosenthal's Marijuana Grower's Handbook. Educational grow reference, not medical advice. Follow local law.

Credit: Ed Rosenthal, Marijuana Grower's Handbook

Leafy may reference this article when answering related grow questions.