How To Keep Gophers Out Of Your Garden: Proven Methods

What is the best way to keep gophers out of your garden? A combination of physical barriers, natural repellents, and targeted trapping methods offers the most effective strategy for garden pest control and burrowing rodent control.

Gophers, those industrious subterranean architects, can wreak havoc on a well-tended garden. Their constant tunneling disrupts root systems, eats away at precious plants, and creates unsightly mounds of earth that mar the landscape. Dealing with these persistent pests is a common challenge for gardeners everywhere. Fortunately, a variety of proven methods exist to deter these unwelcome guests and protect your cherished plants. This guide will delve into effective strategies, from physical barriers to natural solutions, helping you reclaim your garden from these burrowing rodents.

Deciphering the Gopher’s Domain

Before we implement solutions, it’s helpful to grasp how gophers operate. These small, herbivorous rodents are solitary creatures, primarily active underground. They are distinguished by their large incisors that protrude even when their mouths are closed, and by fur-lined cheek pouches used for carrying food. Their extensive tunnel systems can span considerable areas, with each gopher maintaining a network of primary tunnels and lateral runways. They create mounds of soil as they excavate, a tell-tale sign of their presence.

Gophers are attracted to gardens for a simple reason: a readily available food source. They feed on roots, bulbs, tubers, and even the stems and leaves of plants that grow close to the ground. Their tunneling can also damage irrigation systems and weaken the soil structure.

Common Gopher Signs to Watch For:

Fan-shaped mounds of fresh soil: These are the most obvious indicators. Unlike molehills, which are typically conical, gopher mounds are often horseshoe-shaped, with a plugged entrance hole off to one side.
Damaged plants: Roots may be chewed off, bulbs may disappear, and plants may suddenly wilt or die from root disturbance.
Visible tunnels: In lawns or open areas, you might see shallow tunnels just beneath the surface.

Building Your First Line of Defense: Gopher Barriers

Gopher barriers are an excellent proactive measure to prevent these rodents from entering your garden beds in the first place. These physical deterrents work by creating an impassable wall beneath the soil.

Hardware Cloth: The Sturdy Shield

One of the most reliable gopher exclusion methods is the use of galvanized hardware cloth, often referred to as wire mesh. This sturdy material acts as a formidable barrier against their tunneling efforts.

How it works: Gophers are strong diggers, but they generally don’t chew through heavy-gauge wire mesh. By lining the bottom of your garden beds or planting areas with hardware cloth, you create an underground fence they cannot breach.
Material choice: Opt for galvanized hardware cloth with a mesh size of 1/4 inch or 1/2 inch. This is fine enough to prevent gophers from squeezing through, but still allows for adequate drainage and root expansion. Avoid plastic netting, as gophers can chew through it.
Installation:
- For new beds: Dig out the area for your garden bed. Line the bottom and sides with hardware cloth, ensuring it extends at least 12 inches up the sides and is buried at least 12-18 inches deep. Overlap seams by several inches and secure them with zip ties or wire. Then, fill the bed with soil.
- For existing beds: This is more labor-intensive. You’ll need to carefully excavate around the perimeter of the bed, dig down to the required depth, install the hardware cloth, and then backfill.
- For individual plants: For valuable trees, shrubs, or bulbs, you can create a “gopher basket” by wrapping the root ball in hardware cloth before planting. Ensure the wire extends at least 6-12 inches above the soil line to prevent them from reaching the plant from above.

Protecting Trees and Shrubs

Young trees and shrubs are particularly vulnerable. Their tender bark and developing root systems are prime targets for gophers.

Trunk protection: Wrap the base of young trees with hardware cloth or a similar sturdy wire mesh that extends from the soil line up to at least 18 inches. Bury the bottom edge of the mesh 6-12 inches into the ground.
Root protection: When planting, encase the entire root ball in hardware cloth, extending the mesh upwards as described above.

Considerations for Barrier Installation:

Depth is key: Gophers can tunnel deep, so ensure your barriers are buried sufficiently.
Completeness: Make sure there are no gaps or openings in your barriers. Gophers are persistent and will exploit any weakness.
Durability: Galvanized hardware cloth is designed to withstand burial and resist rust for many years.

Natural Gopher Repellent: Appealing to Their Senses

Beyond physical barriers, natural gopher repellent options can make your garden less attractive to these burrowing rodents. These methods often rely on scents or tastes that gophers find offensive.

Scent-Based Deterrents: Overpowering Their Noses

Gophers have a keen sense of smell, and certain strong odors can drive them away.

Castor Oil: This is a popular and relatively effective natural repellent. The oil irritates a gopher’s digestive system if ingested, and its strong smell is also unpleasant.
- DIY spray: Mix 1 tablespoon of castor oil with 1 tablespoon of liquid dish soap (to help the oil emulsify) and 1 gallon of water. Spray this mixture liberally around garden beds, on plants, and near known gopher holes. Reapply after rain or irrigation.
- Granular repellents: Commercial granular products often use castor oil as their active ingredient.
Predator Urine: The scent of urine from natural predators like coyotes or foxes can signal danger to gophers, prompting them to seek safer territory. You can purchase predator urine granules or liquids from garden supply stores. Sprinkle granules near burrows or spray liquids around the perimeter of your garden.
Garlic and Onion: The pungent aroma of garlic and onions is disliked by many rodents.
- Planting companion plants: Grow garlic, onions, and chives near susceptible plants.
- DIY repellent spray: Blend garlic cloves or onions with water, strain the liquid, and add a bit of dish soap before spraying.
Peppermint Oil: The strong scent of peppermint is another deterrent. Soak cotton balls in pure peppermint oil and place them near gopher holes or tunnel entrances. You can also create a spray with peppermint oil, water, and a little dish soap.
Coffee Grounds: Some gardeners report success with scattering used coffee grounds around plants. The smell and texture are thought to be unappealing to gophers.

Taste-Based Deterrents: Making Plants Unpalatable

These methods aim to make your plants taste bad or cause mild indigestion if a gopher decides to take a bite.

Red Pepper Flakes/Cayenne Pepper: Sprinkle these spicy powders around plants and near burrow entrances. The heat irritates their mouths and noses. Be cautious when handling, as it can irritate your own skin and eyes.
Marigolds: These cheerful flowers are often cited as a natural gopher repellent. While their effectiveness can vary, planting marigolds around the perimeter of your garden is a pleasant-smelling and potentially helpful strategy.

Important Notes on Natural Repellents:

Consistency is crucial: Natural repellents often require frequent reapplication, especially after rain or watering, to maintain their effectiveness.
Combination approach: Using a combination of different scents can be more effective than relying on a single one.
Gophers adapt: Over time, gophers might become accustomed to certain scents, so rotating repellents can be beneficial.

Sonic Gopher Repellers: Harnessing Vibrations and Sound

Sonic gopher repellers are electronic devices designed to emit low-frequency vibrations or sounds that are supposed to disturb gophers and drive them away from an area.

How They Work:

These devices are typically staked into the ground in the affected area. They are powered by batteries or solar energy and emit intermittent vibrations or sounds into the soil. The theory is that these disturbances mimic the presence of predators or create an uncomfortable environment, prompting gophers to relocate.

Effectiveness and Considerations:

Mixed results: The effectiveness of sonic repellers is often debated among gardeners. Some users report success, while others find they have little to no impact.
Coverage area: Each device usually has a limited coverage area. To protect a larger garden, you may need to install multiple units.
Soil type: The density and type of soil can affect how well the vibrations travel. Hard, dry soil may dampen the vibrations, reducing their effectiveness.
Gopher adaptation: Like scent repellents, gophers may eventually get used to the sounds or vibrations, rendering the devices less effective over time.
Placement: Ensure the devices are placed strategically throughout the infested area for maximum coverage.

The Art of Gopher Trapping: Targeted Removal

When other methods fail, gopher traps offer a more direct approach to burrowing rodent control. This method requires some knowledge of gopher behavior and careful execution.

Types of Gopher Traps:

Macabee Traps: These are traditional, spring-loaded traps that are designed to catch gophers by the neck or body as they move through their tunnels. They are often made of galvanized steel.
Scissor-Jaw Traps: Similar to Macabee traps, these have scissor-like jaws that snap shut on the gopher.
Tunnel Traps: These traps are designed to be placed directly in the gopher’s active tunnels.

Successful Trapping Techniques:

Locate Active Tunnels: Look for fresh mounds of soil. The most effective place to set a trap is in a main tunnel, which is typically a straight runway between two mounds.
Probe for the Runway: Use a sturdy stick or a specialized tunnel probe to locate the main runway. When you find it, the probe will sink easily into the soil.
Excavate Carefully: Dig a small opening over the identified runway, large enough to place the trap. The goal is to expose the tunnel without collapsing it.
Set the Trap: Arm the trap according to the manufacturer’s instructions. For Macabee and scissor-jaw traps, the trigger mechanism needs to be sensitive and positioned to catch a gopher moving in either direction.
Camouflage and Cover: Place the trap securely in the opening, ensuring it’s flush with the bottom of the tunnel. Cover the opening with a piece of cardboard, a sod chunk, or a shallow bucket to block out light and air. This encourages the gopher to investigate and pass over the trap. You can also place additional soil around the edges to seal light and air leaks.
Baiting (Optional but Recommended): While many traps work by catching the gopher as it moves, some gardeners have success baiting traps with attractants like carrots, sweet potato slices, or peanut butter. However, be aware that bait can also attract other creatures.
Check Regularly: Check your traps daily, or at least every other day. Remove captured gophers promptly.

Safety and Ethical Considerations:

Wear gloves: Always wear gloves when handling traps and captured gophers to prevent the transfer of diseases and to avoid leaving your scent on the traps, which can make gophers wary.
Proper disposal: Dispose of captured gophers humanely and according to local regulations.
Target specificity: While traps are generally effective for gophers, there’s always a small risk of catching other non-target animals.

Gopher Poison: A Last Resort with Caution

Gopher poison, also known as rodenticides, is a chemical method for controlling gopher populations. While it can be effective, it should be considered a last resort due to potential risks to non-target animals and the environment.

Types of Gopher Poisons:

Strychnine-based baits: These are highly toxic and act quickly. They are often in pellet or grain form and are placed directly in active tunnels.
Anticoagulant baits: These baits prevent blood clotting and cause internal bleeding. They are typically slower-acting and may require multiple feedings.

Risks and Responsible Use:

Non-target poisoning: The primary concern with gopher poison is the risk it poses to pets, wildlife, and even humans. Pets that consume poisoned bait or scavenge poisoned gophers can become seriously ill or die.
Environmental impact: Pesticides can leach into the soil and water, potentially harming beneficial organisms and ecosystems.
Secondary poisoning: Predators that eat poisoned gophers can also be poisoned.
Label instructions: If you choose to use rodenticides, it is absolutely crucial to read and follow the product label instructions precisely. Use only baits specifically formulated for gophers and designed for outdoor use.
Placement: Place baits only in active gopher tunnels, using a specialized bait station or tool to minimize the risk of non-target animals accessing them.
Consider alternatives: Explore all other garden pest control and burrowing rodent control options before resorting to poison.

Integrating Various Gopher Exclusion Methods

The most successful approach to garden pest control often involves a multi-pronged strategy that combines several of the methods discussed above.

Start with Barriers: Implement gopher barriers like hardware cloth for new planting beds and around vulnerable plants. This is your strongest preventative measure.
Supplement with Repellents: Use natural gopher repellent options like castor oil sprays or predator urine around the perimeter of your garden and near existing gopher activity. This makes the area less appealing.
Employ Trapping for Active Infestations: If you observe active gopher mounds, strategically deploy gopher traps in their main tunnels. This is an effective way to reduce the population directly.
Use Sonic Repellers with Realistic Expectations: Sonic gopher repellers can be a supplementary tool, but don’t rely on them as your sole defense. Their effectiveness can vary.
Poison as a Last Resort: Only consider gopher poison if the infestation is severe and other methods have proven ineffective, and always with extreme caution and adherence to all safety guidelines.

Maintaining a Gopher-Free Garden: Ongoing Vigilance

Keeping gophers out of your garden is not a one-time task but an ongoing effort.

Regular Inspections: Make it a habit to walk through your garden regularly, looking for new mounds or signs of damage. Early detection makes control easier.
Repair Damage Promptly: Fill in any new gopher holes or mounds you find immediately. This can help disrupt their tunneling patterns and prevent them from expanding their territory.
Encourage Natural Predators: Encourage birds of prey, snakes, and other natural gopher predators to inhabit your garden area. They can help keep gopher populations in check naturally.
Maintain Soil Health: Healthy, well-drained soil can be less appealing to gophers than loose, easily excavated soil.

By understanding gopher behavior and employing a combination of these proven methods, you can effectively protect your garden and enjoy the fruits of your labor without the constant threat of these persistent burrowing rodents.

Frequently Asked Questions (FAQ) about Gopher Control

Q1: How deep do gophers dig?
A1: Gophers can dig tunnels quite deep, with main runways often found 6 to 12 inches below the surface, but their shallow feeding tunnels can be just a few inches down. Their burrow systems can extend even deeper for living chambers.

Q2: Can I use chicken wire to keep gophers out?
A2: While chicken wire might deter some smaller rodents, it is generally not effective against gophers. Gophers can chew through thinner chicken wire and can also tunnel under it if it’s not buried deep enough. Hardware cloth with smaller mesh (1/4 or 1/2 inch) is a much more reliable barrier.

Q3: Are natural gopher repellents effective?
A3: Natural gopher repellents like castor oil, predator urine, and strong-smelling plants can be effective, but their success often depends on consistent application and may vary in effectiveness. They are best used as part of a comprehensive garden pest control strategy rather than as a standalone solution.

Q4: How do I know if a hole is a gopher hole?
A4: Gopher holes are typically identified by characteristic fan-shaped or horseshoe-shaped mounds of fresh soil. You’ll often find a plugged entrance hole off to one side of the mound. Molehills, in contrast, are usually more conical and appear closer to the disturbed area.

Q5: Will flooding the gopher tunnels get rid of them?
A5: Flooding gopher tunnels is generally not an effective long-term solution and can sometimes be counterproductive. Gophers are excellent swimmers and can simply move to a drier part of their tunnel system or escape the flooded area. It can also damage plants and soil structure.

Q6: Can I use mothballs as a gopher repellent?
A6: While mothballs are sometimes suggested, their use as a gopher repellent is generally discouraged. They can be toxic to children and pets, and their effectiveness is questionable and often temporary. Moreover, the chemicals can leach into the soil and harm beneficial soil organisms.

Q7: How long does it take to see results with gopher traps?
A7: It can vary, but you might see results within a few days to a week. Success depends on proper placement, the activity level of the gophers, and whether you’re trapping in a main runway.

Q8: Are sonic gopher repellers safe for my pets?
A8: Most sonic gopher repellers are designed to emit sounds or vibrations outside the hearing range of dogs and cats, making them generally safe for pets. However, some pets can be sensitive to certain frequencies, so it’s wise to observe your pets for any signs of distress.

Q9: What are the best plants to grow that gophers don’t like?
A9: Gophers tend to avoid plants with strong scents or toxic properties. Examples include marigolds, daffodils, garlic, onions, chives, castor bean plants (though these are poisonous and should be handled with care), and certain ornamental alliums. However, it’s important to note that if a gopher is hungry enough, it may still attempt to eat these plants, especially their bulbs or roots. Using gopher barriers is a more reliable method for protecting these plants.

Q10: Is it legal to use gopher poison?
A10: The legality of using gopher poison can vary by region and municipality. Some areas have restrictions or bans on certain types of rodenticides due to environmental concerns. Always check with your local agricultural extension office or government agencies to ensure you are complying with all regulations before using any chemical control methods.