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Outdoor Garden Pests

Deer, gophers, rats, and slugs are site problems. Barriers and sanitation beat late control, and moles are usually not the real plant killer.

pests ipm seedling
Outdoor Garden Pests — Marijuana Grower's Handbook, page 783
Full book

Deer browse

Sign

Aromaragged tears, not a clean rodent clip

Taste

Aromathey still eat young plants

Fence

Aromathey can jump under 8 ft (2.5 m) if they can get a run

Electric

Aromaa low multi-strand fence they try to slip through often trains them to stay back

Scent

Example strains
garlic capsaicin rotten egg human or predator scent and soap bags

Gophers versus moles

Mounds

Aromagopher spoil is fan-shaped with the hole near one edge

Damage

Aromagophers chew or pull roots so plants wilt and lift easily

Pots

Aromacontainers and hydro skip both

In-ground

Aromaline the hole with hardware cloth

Rats

Habit

they gnaw woody stalks to wear down teeth, not because cannabis is a favorite food

Speed

one animal can drop several plants in a night

Site

risk rises near orchards, grain, camps, or unsecured food

Barrier

at least 18 inches (45 cm) high with gaps no larger than 0.5 inch (12.5 mm), or steel wool wrapped on the stalk

Control

traps with an attractant bait; keep food scraps gone and consider cats in the area

Slugs and snails

Sign

holes or clipped edges plus a silvery slime trail, usually after dusk

Friend

cone-shelled decollate snails eat other slugs; leave them if pest snails are also present

Bait

iron phosphate granules (Sluggo and similar) are the book’s first recommendation

Copper

tape, mesh, or wire shocks them; do not trap them inside the ring

Water

irrigate in the morning so the surface dries before night feeding