How to Keep Bunnies Out of Garden Beds: Beginner Fencing & Repellents

The Real Threat: Eastern Cottontail Foraging Behavior

When learning how to keep bunnies out of garden beds, most beginners misunderstand the animal they are fighting. The Eastern cottontail (Sylvilagus floridanus) is responsible for the vast majority of suburban garden damage. Unlike groundhogs or true burrowing rodents, cottontails do not dig extensive underground tunnel systems. They rely on surface-level nests concealed in tall grass or brush piles. This biological fact completely changes your exclusion strategy: you do not need to bury fencing three feet underground, but you do need to secure the surface perimeter against their tendency to squeeze through gaps and dig shallow surface scrapes.

According to the University of California Agriculture and Natural Resources (UC ANR), a single cottontail can consume up to half a pound of green vegetation daily. In a 100-square-foot vegetable bed, a pair of rabbits can decimate $200 worth of heirloom seedlings in a single weekend. Effective exclusion requires a multi-layered approach combining physical barriers with olfactory deterrents.

The 36-Inch Rule: Installing Rabbit-Proof Fencing

Physical exclusion is the only 100% reliable method for protecting high-value crops like peas, beans, and leafy greens. However, simply staking chicken wire around a bed fails because rabbits will push beneath the bottom edge. To build a permanent barrier, follow the 36-inch L-flange method.

Step-by-Step L-Flange Installation

1. Select the Right Mesh: Purchase 1/2-inch or 1-inch mesh hardware cloth. Do not use standard poultry netting (chicken wire), which is too flimsy and can be crushed by raccoons or dogs, creating rabbit entry points.
2. Choose the Correct Gauge: Buy 19-gauge or thicker galvanized wire. (Note: In wire gauge, a lower number means thicker, stronger wire. 22-gauge is too weak for long-term outdoor use).
3. Determine Total Height: You need a 36-inch wide roll of hardware cloth. This provides 24 inches of vertical fencing above ground and a 12-inch horizontal apron.
4. Create the L-Flange: Bend the bottom 12 inches of the wire outward at a strict 90-degree angle so it rests flat on the soil, pointing away from the garden bed.
5. Anchor the Apron: Pin the horizontal 12-inch flange to the ground using 6-inch galvanized landscape staples (U-pins) placed every 18 inches. You can cover this apron with mulch or soil to hide it and allow grass to grow through, which naturally anchors it further.

Hardware Cloth vs. Welded Wire: Material Comparison

Choosing the wrong wire gauge or mesh size is a costly beginner mistake. Below is a breakdown of the three most common fencing materials used in garden centers, evaluated specifically for rabbit exclusion.

Material Type	Mesh Size	Wire Gauge	Cost per Linear Ft	Rabbit Exclusion Efficacy	Durability & Edge Cases
Galvanized Hardware Cloth	1/2 inch	19-Gauge	$1.80 - $2.50	Excellent (100%)	Highly rigid; prevents kits (babies) from squeezing through. Lasts 10+ years.
Welded Wire Fencing	1x2 inch	16-Gauge	$1.20 - $1.60	Poor (Fails on kits)	Very strong, but 1-inch gaps allow baby rabbits to enter in late spring.
Poultry Netting (Chicken Wire)	1 inch hex	20-Gauge	$0.60 - $0.90	Moderate (60%)	Flimsy; easily crushed by heavier animals, creating secondary rabbit entry holes.

Olfactory & Taste Deterrents: What Actually Works

While fencing protects the perimeter, repellents are necessary for protecting ornamental beds or young trees inside the fence line where rabbits might occasionally bypass the barrier. Repellents fall into two chemical categories: fear-inducing (olfactory) and irritation-inducing (taste).

Putrescent Egg Solids (Olfactory)

Products containing putrescent whole egg solids, such as Liquid Fence Deer & Rabbit Repellent ($18-$24 for a 32oz ready-to-use bottle), mimic the scent of decaying organic matter, triggering a predator-avoidance instinct in foraging rabbits. According to research compiled by the Internet Center for Wildlife Damage Management, egg-based repellents consistently outperform predator urine (like coyote or fox urine), which degrades rapidly under UV light and washes away completely in the first rainstorm.

Capsaicin & Thiram (Taste/Contact)

For non-edible ornamental plants, contact repellents containing capsaicin (hot pepper extract) or Thiram (a fungicide with bitter properties) are highly effective. Bonide Rabbit Scat utilizes a bittering agent that makes foliage unpalatable after the first bite.

Expert Application Rule: All liquid repellents require a 24-hour dry window to become rainfast. If you spray Liquid Fence at 4:00 PM and a dew-heavy night or morning rain occurs before the product fully polymerizes to the leaf cuticle, the active ingredients will wash into the soil, rendering the application useless.

Plant Selection: Bunny-Resistant Vegetables & Flowers

No plant is entirely rabbit-proof under starvation conditions, but integrating highly resistant species into your garden's outer perimeter creates a natural buffer zone that discourages foraging before they reach your vulnerable crops.

Highly Susceptible Plants (Protect with Fencing)

• Vegetables: Peas, beans, beets, carrots, and leafy lettuce.
• Flowers: Pansies, petunias, sunflowers, and tulips.
• Shrubs: Young rose canes and smooth-barked dogwoods in winter.

Resistant Plants (Use as Perimeter Buffers)

• Alliums: Onions, garlic, chives, and ornamental alliums. The high sulfur content repels their sensitive olfactory receptors.
• Herbs: Lavender, rosemary, sage, and oregano. The volatile oils mask the scent of nearby palatable plants.
• Flowers: Marigolds, snapdragons, daffodils, and foxglove (which is also highly toxic to mammals).
• Vegetables: Tomatoes, potatoes, and squash (the prickly vines and solanine-containing leaves are naturally avoided).

Troubleshooting: When Bunnies Still Break Through

Even with proper installation, environmental variables can compromise your defenses. Use this diagnostic framework to identify and fix active breaches.

Symptom 1: Damage occurs after heavy snowfall

The Cause: Snow drifts effectively raise the ground level, reducing your 24-inch above-ground fence height to a mere 6 inches. Rabbits simply walk over the top of the snowdrift and into the bed.
The Fix: In regions with sustained winter snowpack, you must use 48-inch or 60-inch hardware cloth, ensuring at least 30 inches remains above the anticipated maximum snow line. Alternatively, use removable snow-fencing stakes to elevate the wire mesh during winter months.

Symptom 2: Clean, 45-degree angled cuts on young stems

The Cause: This is the signature clipping pattern of a rabbit. If you see this inside a fenced bed, a rabbit is either digging under a compromised section of the L-flange, or a mother has nested inside the fence line and her kits are foraging locally.
The Fix: Walk the perimeter with a garden hose. Run water along the base of the fence; if water pools or flows under the wire, the soil has settled and created a gap. Backfill the depression with packed clay soil and add additional landscape staples. Inspect the bed for a shallow, fur-lined nest. If found, gently cover the nest with the original nesting material and contact local wildlife rehabilitation authorities for relocation protocols, as disturbing active kits often results in abandonment.

Symptom 3: Bark stripped from tree trunks up to 18 inches high

The Cause: Winter girdling. When snow covers ground-level forage, rabbits stand on their hind legs or on top of the snow to eat the nutrient-rich cambium layer of young fruit trees.
The Fix: Fencing the whole yard is impractical. Instead, use corrugated plastic tree guards or wrap the lower 24 inches of the trunk in 1/4-inch hardware cloth. Ensure the guard is removed in early spring to prevent trapping moisture against the bark, which invites fungal pathogens and provides cover for boring insects.