Rabbit Protection for Outdoor Cannabis

What rabbit protection actually is

Rabbit protection is the set of physical and behavioral measures that stop wild rabbits and hares from grazing on cannabis plants. In practice it means a barrier — usually a wire mesh cage or perimeter fence — that physically excludes rabbits from reaching stems and leaves. Two species cause most North American damage: the eastern cottontail (Sylvilagus floridanus) and the black-tailed jackrabbit (Lepus californicus). Both are crepuscular browsers that prefer tender, low-growing vegetation ^[1][2]. Young cannabis, with its soft stems and broad cotyledons, fits that preference exactly. Damage is diagnostic: rabbits clip stems at a clean 45-degree angle, usually within 12 inches of the ground. Deer tear and shred; rodents gnaw irregularly. A clean angled cut on a missing seedling is a rabbit. Strong evidence

Why growers use it

A single rabbit can take out a row of seedlings overnight. Because cannabis is typically transplanted as a small, tender plant in late spring — exactly when rabbit populations peak and natural forage is most palatable — outdoor growers in rural and suburban areas almost always encounter at least one rabbit incident per season ^[1]. Unlike deer browsing, which a mature plant can usually recover from, rabbit damage often severs the main stem entirely, killing the plant. For a grower running a small number of large outdoor plants, losing two or three to rabbits is a meaningful percentage of the harvest. Protection is cheap insurance: a roll of poultry netting costs less than a single replacement clone and lasts multiple seasons.

When to start and stop

Install protection before or at the moment of transplant, not after. Rabbits patrol territory nightly and will find a new food source within 24–48 hours. Common transplant timing in the Northern Hemisphere is mid-May to early June, which coincides with peak rabbit kit dispersal ^[2]. You can remove or reduce protection once:

• The main stem is woody and at least pencil-thick at the base.
• The lowest leaves are above roughly 90 cm (3 ft) — the practical browse height for cottontails standing on hind legs.
• Flowering has begun, since rabbits generally avoid resinous mature foliage Weak / limited.

Many growers simply leave cages in place all season; they also help with cats, groundhogs, and curious dogs.

How to do it: step-by-step

Option A: Individual plant cages (recommended for small grows)

1. Cut a 4 ft (1.2 m) wide strip of 1-inch hexagonal poultry netting ("chicken wire") about 5 ft (1.5 m) long.
2. Roll it into a cylinder roughly 18 inches (45 cm) in diameter and secure the seam with three or four hog rings, zip ties, or twisted wire.
3. Place the cylinder over the plant after transplant. The cage should clear the foliage on all sides by at least 4 inches so rabbits can't reach through.
4. Drive two wooden or metal stakes through the mesh into the soil to keep the cage from being pushed or dug under.
5. Bend the bottom 4 inches of mesh outward along the ground and pin with landscape staples, or bury it 3–4 inches deep. Rabbits rarely dig under barriers but will exploit gaps. Strong evidence

Option B: Perimeter fence (for plots of 4+ plants)

1. Use 1-inch poultry netting or ½-inch hardware cloth, at least 30 inches (75 cm) tall above grade ^[1].
2. Set T-posts or wooden stakes every 6–8 ft around the plot.
3. Bury the bottom 6 inches, or bend it outward in an L-shape and pin it flat with staples and a few inches of soil/mulch on top.
4. Keep the top edge taut; sagging mesh lets jackrabbits jump or climb.
5. Gate access points with overlap, not a hinged door — a simple flap of mesh weighted with a brick works.

Materials note: ½-inch hardware cloth also excludes voles and most mice. 2-inch poultry netting is cheaper but young cottontails can squeeze through; don't use it for rabbit control ^[1].

Repellents, plants, and folklore

Commercial repellents based on putrescent egg solids, capsaicin, or predator urine have mixed and short-lived effects in published trials, and require reapplication after every rain ^[3] Weak / limited. They are a supplement to fencing, not a replacement. Blood meal sprinkled around plants is a common folk remedy; there's little controlled data, and it can attract dogs and raccoons Anecdote. Companion plants said to repel rabbits — marigolds, alliums, lavender — show inconsistent results in the horticultural literature and should not be relied on for high-value crops Weak / limited. Ultrasonic deterrents have repeatedly failed in controlled tests against mammals ^[4][evidence:strong, against]. The most cost-effective non-fence intervention is habitat reduction: mow tall grass, remove brush piles within 30 ft of the garden, and seal gaps under sheds where rabbits den.

Common mistakes

• Installing the cage after damage occurs. By then rabbits know the location. Install at transplant.
• Cage too narrow. If leaves touch the mesh, rabbits eat through the holes. Leave clearance.
• No ground anchoring. Rabbits push under unweighted edges far more often than they dig.
• Using 2-inch mesh. Juvenile cottontails fit through gaps as small as 2.5 inches.
• Relying on dogs. A dog that's outside all night helps; a dog that's inside from dusk to dawn — when rabbits feed — does nothing.
• Spraying repellent on the plant itself. Some products contain surfactants or capsaicin that can damage cannabis foliage or contaminate flower. Apply to a barrier ring of mulch around the plant, not the plant.

Related techniques

Rabbit fencing pairs naturally with Deer Protection for Outdoor Cannabis (taller fencing, 7–8 ft) and Vole and Rodent Control (½-inch hardware cloth with a buried skirt). For container grows, simply elevating pots on a bench 2 ft off the ground eliminates rabbit risk entirely. Growers in heavy-pressure areas often combine perimeter fencing with individual cages for the first three weeks after transplant — belt and suspenders.

Sources

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