Garden Fencing Guide: Deer, Rabbit, and Groundhog Protection That Actually Works
I spent three consecutive summers building inadequate fences. The first year, a 4-foot wire fence stopped nothing. Deer stepped over it, rabbits squeezed through the 2-inch mesh, and groundhogs dug under it. The second year, I raised the fence to 6 feet and added a tighter mesh. Deer jumped it cleanly. The third year, I built an 8-foot fence with a 2-foot wire apron at the base and a single strand of electric wire at the top. Zero animal damage for the entire growing season. The difference between a fence that works and a fence that does not is not effort or expense. It is understanding the specific capabilities of each animal and building to counter them. Deer jump. Rabbits squeeze. Groundhogs dig. Each requires a different barrier strategy. Here is what actually works, with specific dimensions, materials, and costs.
Deer Fencing: Height Is Everything
White-tailed deer (Odocoileus virginianus) can clear a 7-foot fence from a standing position and an 8-foot fence with a running start. They rarely jump 8 feet from a standing position, and they never jump 9 feet. The minimum effective deer fence height is 8 feet. In areas with heavy deer pressure (suburban neighborhoods adjacent to wooded areas in the Northeast and Midwest), 8 feet is the threshold. In areas with light deer pressure (open farmland with scattered cover), 7 feet may suffice, but 8 feet eliminates all uncertainty.
Woven Wire Deer Fence
Woven wire fencing (also called field fence or farm fence) made from 12.5-gauge galvanized steel wire with 2-inch by 4-inch mesh openings is the most durable deer fence. It comes in 100-foot and 330-foot rolls, 48 to 96 inches tall. A 96-inch (8-foot) roll of woven wire costs $120 to $180 per 100-foot roll from farm supply stores (Tractor Supply, Rural King) or online (Red Brand, Stay-Tuff). Installation requires steel T-posts (6.5 feet tall, 1.25 pounds per foot, $3 to $4 each) spaced 8 to 10 feet apart, with a wood corner post (4x4 pressure-treated, 8 feet long, set 3 feet in concrete) at each corner and gate location. Attach the wire to T-posts with wire clips (fence staples, $5 per bag of 100). A 100-foot by 8-foot fence requires 12 to 14 T-posts, 4 corner posts, 1 gate ($60 to $100 for a 4-foot walk-through gate), and 2 bags of concrete ($8 per 80-pound bag). Total materials cost for 100 linear feet: $350 to $500. Lifespan: 20 to 30 years for galvanized wire, 40+ years for Class 3 galvanized.
Polypropylene Deer Fence
Black polypropylene mesh fencing (sold as deer fencing by brands like Benner's Gardens and DeerBusters) is lighter, less visible, and easier to install than woven wire. It comes in 7.5-foot and 8-foot heights, 100-foot to 500-foot rolls, with 1.75-inch by 1.75-inch mesh. Cost: $80 to $150 per 100-foot roll. The material is UV-stabilized and lasts 10 to 15 years. Poly fencing requires the same post spacing as wire fencing but can be attached with zip ties ($8 per pack of 100) instead of wire clips. The disadvantage is lower durability: poly fencing tears if a deer runs into it at full speed (which happens when the fence is installed across a known deer trail), and it sags between posts over time, requiring retightening every 2 to 3 years. Poly fencing is the better choice for gardens where aesthetics matter (the black mesh is nearly invisible from 20 feet) and where deer pressure is moderate.
Double-Fence Strategy
Deer have poor depth perception and are reluctant to jump into a narrow space where they cannot see a clear landing zone. A double fence consisting of two parallel fences spaced 4 to 5 feet apart, each 4 to 5 feet tall, stops deer as effectively as a single 8-foot fence. The outer fence can be a simple 3-foot poly fence on lightweight posts. The inner fence is your primary garden fence at 5 feet. The total material cost is lower than a single 8-foot fence (two 5-foot rolls cost less than one 8-foot roll), and the visual impact is less imposing. Cornell University trials in Ithaca, New York, demonstrated that double fences with 4-foot spacing reduced deer intrusion by 95 to 100 percent over 3 growing seasons, compared to 80 to 85 percent for a single 6-foot fence.
Rabbit Fencing: It Is About the Mesh Size, Not the Height
Eastern cottontail rabbits (Sylvilagus floridanus) can squeeze through any opening larger than 2 inches by 2 inches. They do not jump higher than 24 inches, and they do not dig under fences (unlike groundhogs). A rabbit fence only needs to be 24 to 30 inches tall, but the mesh openings must be 1 inch or smaller. The bottom 6 inches should be buried or pinned to the ground to prevent rabbits from pushing under the fence where it meets the soil surface.
Hardware Cloth
Galvanized hardware cloth with 1/2-inch or 1-inch mesh, made from 19-gauge or 23-gauge wire, is the standard material for rabbit fencing. It comes in 24-inch and 36-inch widths, 25-foot and 50-foot rolls. A 24-inch by 50-foot roll of 1-inch mesh, 19-gauge hardware cloth costs $35 to $50. Hardware cloth is rigid enough to stand on its own when attached to posts, and the galvanized coating resists rust for 15 to 20 years. Attach it to the same T-posts used for the deer fence with wire clips or U-nails. Bury the bottom 6 inches in a shallow trench, or fold the bottom 6 inches outward at a 90-degree angle and pin it flat to the ground with landscape staples (6-inch galvanized staples, $5 per pack of 50). The buried or pinned portion prevents rabbits from pushing under the fence.
Chicken Wire
Chicken wire (hexagonal mesh, 20-gauge wire, 1-inch openings) is cheaper than hardware cloth ($15 to $25 per 50-foot roll) but less durable. The thin wire (20-gauge versus 19-gauge) bends easily, rusts within 5 to 8 years, and rabbits can chew through it if they are sufficiently motivated (which they are when young tender lettuce or bean seedlings are on the other side). Chicken wire is acceptable as a temporary fence for a single season but should not be used for a permanent installation. The hexagonal openings also tend to deform over time, creating gaps large enough for rabbits to squeeze through.
Integration with Deer Fence
In gardens that need both deer and rabbit protection, install the 8-foot deer fence as the primary structure and attach a 24-inch strip of hardware cloth to the bottom of the deer fence. This creates a dual-purpose barrier: the upper 6 feet of woven wire or poly mesh stops deer, and the lower 2 feet of hardware cloth stops rabbits. The hardware cloth attaches to the deer fence with hog rings ($8 per pack of 100) or zip ties. Bury or pin the bottom 6 inches of the hardware cloth as described above. This integrated approach costs $30 to $50 more than deer fencing alone and eliminates the need for a separate rabbit fence.
Groundhog Fencing: Stopping the Tunnelers
Groundhogs (Marmota monax, also called woodchucks) are the most difficult garden pest to exclude with fencing because they dig. A groundhog can excavate a burrow entrance in under 30 minutes and tunnels 4 to 6 feet deep. They climb poorly (unlike raccoons) and jump no higher than 18 inches, so height is not the issue. The barrier must extend below ground to prevent tunneling under the fence line.
L-Shape Wire Apron
The most effective groundhog exclusion is an L-shaped wire apron extending outward from the base of the fence. Use 3-foot-wide hardware cloth (1-inch mesh, 19-gauge) attached to the bottom of the fence. The hardware cloth extends 24 inches up the fence and 12 inches outward along the ground surface, forming an L shape. Pin the horizontal portion flat to the ground with landscape staples every 12 inches. Cover the apron with 2 to 3 inches of soil or mulch so grass can grow through it. When a groundhog encounters the wire apron while digging, it hits the mesh 12 inches from the fence and cannot dig under it without first excavating the entire 12-inch apron, which it will not do. The apron must extend outward, not downward. A vertical wire skirt buried 12 inches straight down is less effective because groundhogs dig at an angle and can emerge below the buried wire.
Electric Wire Option
A single strand of electric wire installed 4 inches above the ground and 4 inches outside the fence perimeter deters groundhogs from approaching the fence. When the groundhog touches the wire with its nose (its primary sensory organ), it receives a 5,000 to 7,000-volt pulse that conditions it to avoid the area. A solar-powered electric fence charger (Parmak, Zareba, or Gallagher, $80 to $120) powers 0.5 to 2 miles of single-wire fencing. The wire is 17-gauge aluminum or galvanized steel ($15 to $25 per 1/4-mile spool). Install the wire on plastic insulators ($5 per pack of 25) attached to fiberglass posts ($3 to $5 each) spaced 15 to 20 feet apart. The electric wire alone stops 70 to 80 percent of groundhogs. Combined with the wire apron, effectiveness approaches 95 to 100 percent.
Two-Door Live Traps
When fencing alone is insufficient (groundhogs have been known to climb over or chew through wire fencing in extreme cases), live trapping removes the animals. Use a Havahart 1079 two-door live trap (32 inches by 10 inches by 12 inches, $50 to $60). Bait the trap with sliced apples, cantaloupe, or lettuce placed at the far end behind the trigger pan. Place the trap near the burrow entrance or along a known groundhog travel path. Check the trap every 12 hours. Relocate trapped groundhogs at least 5 miles from your property (check local regulations; some states prohibit relocation of wildlife). Trapping is most effective in early summer (June) before the young are fully weaned and in early fall (September) when groundhogs are actively feeding to build fat reserves for hibernation.
Gate Design: The Weakest Point in Any Fence
Every fence has a gate, and every gate is a potential entry point. Animals find gates by observing humans opening and closing them. A gate that is left open overnight, has a gap at the bottom, or does not match the fence height renders the entire fence useless.
Matching Gate Height to Fence Height
The gate must be the same height as the fence. An 8-foot deer fence with a 6-foot gate is a 6-foot fence to the deer. Pre-built farm gates (4-foot, 5-foot, and 6-foot widths) are available at farm supply stores for $60 to $120. For 8-foot gates, build a custom frame from 2x4 pressure-treated lumber and cover it with the same fencing material as the main fence. A custom 8-foot gate frame requires two 2x4x8-foot uprights, two 2x4x4-foot cross braces, and a diagonal brace for rigidity. Cover the frame with deer fencing or hardware cloth and attach with fence staples. Hang the gate on two 6-inch strap hinges ($8 per pair) bolted through the gate frame and the corner post. Install a gate latch ($10 to $15) that can be operated with one hand.
Eliminating Gaps
The gap between the bottom of the gate and the ground is the most common entry point for rabbits and groundhogs. A gap of 2 inches or more allows rabbits to squeeze under. A gap of 4 inches allows groundhogs to push through. Solutions: (1) Attach a 12-inch strip of hardware cloth to the bottom of the gate that drags on the ground when the gate opens and closes. The hardware cloth fills the gap regardless of uneven ground. (2) Install a wooden threshold (a pressure-treated 2x4 laid flat on the ground under the gate) that the gate closes against. (3) Pour a concrete sill under the gate (4 inches wide, 2 inches deep) to create a permanent, level surface. The concrete sill costs $5 in materials and eliminates the gap permanently.
Self-Closing Gate Hardware
Install a spring-loaded gate closer ($15 to $25) that automatically pulls the gate shut after you walk through. This prevents the gate from being accidentally left open. A gate left open for a single night is all it takes for deer to find and enter the garden. Once deer have discovered a food source inside the fence, they will test the fence repeatedly for weeks afterward, putting more pressure on the gate and any weak points in the fence line.
Installation: Building a Dual-Purpose Deer and Rabbit Fence
This procedure builds a 100-foot perimeter fence that excludes deer (8-foot height), rabbits (1-inch mesh on the lower 2 feet), and groundhogs (12-inch wire apron). Total installation time for two people: 6 to 8 hours. Tools required: post-hole digger, manual or powered ($25 to $200), level ($8), wire cutters ($12), fencing pliers ($15), sledgehammer ($20), tape measure, and work gloves.
Step 1: Mark the Perimeter and Set Corner Posts
Mark the fence line with stakes and string. For a rectangular garden, measure and mark the four corners. For irregular shapes, mark corners at every direction change. Dig post holes at each corner, 36 inches deep and 12 inches in diameter. Set a 4x4x8-foot pressure-treated post in each hole, plumb it with a level, and fill the hole with concrete (one 80-pound bag per hole). Allow the concrete to cure for 24 to 48 hours before attaching fencing. For a 20x50-foot garden (140 linear feet of perimeter), you need 4 corner posts and 1 to 2 gate posts.
Step 2: Install T-Posts Along the Fence Line
Drive T-posts into the ground every 8 to 10 feet along the fence line using a post driver (a hollow steel tube that fits over the T-post, $20 to $30). Drive each post 18 to 24 inches into the ground, leaving 5.5 to 6 feet above ground. For an 8-foot fence, the T-posts do not reach the top. Extend the T-posts by attaching a 2-foot section of 1/2-inch rebar to the top of each T-post with wire or U-bolts. The rebar extension supports the top of the deer fencing. For a 140-foot perimeter, you need 14 to 18 T-posts plus extensions.
Step 3: Attach the Deer Fence
Unroll the 8-foot deer fencing along the outside of the posts. Starting at a corner post, attach the fencing to the post with wire clips or zip ties at 12-inch intervals. Pull the fencing taut (but not so tight that it distorts the mesh) and attach to each T-post. At the top, fold 6 inches of fencing over the rebar extension and secure with wire. At the bottom, overlap the fencing 6 inches onto the ground surface. The bottom 6 inches will be covered by the wire apron in the next step.
Step 4: Install the Wire Apron
Lay 3-foot-wide hardware cloth along the fence line on the ground surface. The hardware cloth should overlap the bottom of the deer fence by 6 inches. Attach the hardware cloth to the deer fence with hog rings or zip ties at 12-inch intervals. Fold the outer 12 inches of the hardware cloth flat against the ground, extending outward from the fence. Pin the flat portion to the ground with landscape staples every 12 inches. Cover the apron with 2 to 3 inches of soil or mulch. Grass will grow through the mesh within 4 to 6 weeks, anchoring it in place and making it invisible.
Step 5: Install the Gate
Build or install the gate at the desired location (typically the corner closest to the house or water source). Hang the gate on the corner post with strap hinges. Attach the same fencing material to the gate frame. Install the gate latch. Attach a 12-inch hardware cloth skirt to the bottom of the gate that drags on the ground. Install a spring-loaded closer. Test the gate by opening and closing it 5 to 10 times to ensure smooth operation and that no gaps remain at the bottom or sides.
Cost Breakdown by Garden Size
Costs below include all materials for a dual-purpose deer, rabbit, and groundhog fence with wire apron and gate. Labor is not included; assume 6 to 8 hours for two people for a 20x50-foot garden.
Small Garden (20 x 20 feet, 80 linear feet)
Corner posts (4): $40. T-posts (10): $35. Rebar extensions (10): $20. Deer fencing (80 feet, 8-foot height): $100 to $180. Hardware cloth (80 feet, 3-foot width): $60 to $80. Landscape staples (100): $10. Wire clips and zip ties: $15. Gate (4-foot pre-built): $70. Gate hardware: $20. Concrete (4 bags): $32. Total: $402 to $562.
Medium Garden (20 x 50 feet, 140 linear feet)
Corner posts (4): $40. T-posts (16): $56. Rebar extensions (16): $32. Deer fencing (140 feet, 8-foot height): $170 to $250. Hardware cloth (140 feet, 3-foot width): $100 to $140. Landscape staples (150): $15. Wire clips and zip ties: $20. Gate (4-foot pre-built): $70. Gate hardware: $20. Concrete (4 bags): $32. Total: $555 to $775.
Large Garden (40 x 60 feet, 200 linear feet)
Corner posts (4): $40. T-posts (22): $77. Rebar extensions (22): $44. Deer fencing (200 feet, 8-foot height): $240 to $360. Hardware cloth (200 feet, 3-foot width): $140 to $200. Landscape staples (200): $20. Wire clips and zip ties: $25. Gate (4-foot pre-built): $70. Gate hardware: $20. Concrete (4 bags): $32. Total: $708 to $1,028.
Seasonal Maintenance
A properly installed fence requires minimal maintenance. Annual inspections prevent small problems from becoming breaches.
Spring Inspection (March to April)
Walk the entire fence line and check for: (1) Posts that have heaved out of the ground during frost heave. Re-drive loose posts with a sledgehammer. (2) Wire connections that have loosened or corroded. Replace zip ties (which degrade in UV light after 3 to 4 years) and re-crimp wire clips. (3) Low spots where the fence sags within 6 inches of the ground. Deer will crawl under a fence that sags to 5 feet or lower. Tighten the fence by pulling it taut and re-securing to posts. (4) Burrows under the wire apron. Fill any new groundhog tunnels with compacted soil and extend the wire apron if necessary. (5) Gate hardware. Lubricate hinges with WD-40 and test the spring-loaded closer.
Fall Preparation (October to November)
Remove any vines (cucumber, squash, morning glory) that have grown onto the fence during the summer. Vines add weight that causes sagging and trap moisture against the wire, accelerating rust. Trim vegetation along the fence line to a width of 12 inches on both sides. Tall grass and weeds growing against the fence create a bridge that rabbits and groundhogs use to climb over the lower section. In areas with heavy snowfall, mark the fence line with tall stakes or flags every 20 feet so you can locate the fence when shoveling snow. Snow piled against the fence reduces its effective height. A drift of 2 feet against an 8-foot fence reduces it to a 6-foot fence, which deer can clear.