Will Chipmunks Eat Your Garden: 7 Plants They Avoid and How to Protect Yours

Chipmunks are opportunistic foragers, and their diet focuses on easy-to-access, nutrient-rich foods. 🌱 They particularly love garden vegetables because they're soft and packed with carbohydrates, which fuel their high-energy lifestyle.

Unlike squirrels, chipmunks won't just nibble—they'll strip entire plants if left unchecked, especially during early morning or evening when they're most active. Understanding their feeding patterns helps you protect your garden before they become a persistent problem.

What makes this especially frustrating is their burrowing behavior. Chipmunks often dig near garden edges, creating tunnels that make plants more vulnerable to root damage. This means even if you deter them from the surface, they might still be causing hidden destruction below ground.

Chipmunk diet: what plants they crave in gardens

Chipmunks are primarily drawn to plants that offer the highest caloric return with the least effort—think of them as tiny, furry snack machines. Their diet is about 70% carbohydrates, with a focus on soft, easy-to-chew vegetation that provides quick energy.

This explains why they target young, tender shoots and leaves over mature, fibrous plants. The science behind this preference lies in their high metabolism; a chipmunk's heart rate can reach 300 beats per minute when active, requiring constant fuel intake.

Let's break down their garden favorites by nutritional profile:

• Leafy greens (lettuce, spinach, kale): These contain 5-10% sugars and minimal fiber resistance, making them ideal for their small jaws. The moisture content also satisfies their hydration needs.
• Corn and beans: These provide 15-20% starch content, offering sustained energy. Chipmunks will often strip entire corn cobs, leaving behind just the husk.
• Fruits (berries, tomatoes, peaches): The natural sugars (up to 12% in ripe berries) act like candy to them, especially during late summer when natural food sources dwindle.

Their foraging behavior is equally strategic. Chipmunks don't just nibble randomly—they employ a "scatter-hoarding" technique where they'll carry food back to their burrows to store for winter. This explains why you might find half-eaten vegetables scattered around your garden or near their burrow entrances.

Their burrows, typically 1-2 feet deep, often have multiple exits near garden edges, allowing them to raid multiple plants without being detected. The digging itself causes root damage that can kill young plants, even if the chipmunk only takes a few bites.

What most gardeners don't realize is how chipmunks use scent trails to locate food sources. They have an exceptional sense of smell (about 10,000 times more sensitive than humans for certain odors) and will follow chemical markers left by other chipmunks.

This is why once one finds your garden, others quickly follow. The soft, earthy scent of freshly turned soil and young plants acts like an all-you-can-eat buffet sign to them.

Seasonal patterns also play a crucial role. In spring and early summer, when plants are most tender, chipmunk activity peaks. They'll consume up to 3 times their body weight daily during this period.

The contrast between their 1-2 ounce size and their pound-per-day food intake during breeding season explains why they're such relentless garden raiders. Their preference for young plants stems from both nutritional value and ease of consumption—mature plants have developed tougher fibers and protective compounds that chipmunks find less appealing.

Here's a visual comparison of their favorite garden targets:

• High-risk plants: Lettuce, beans, corn, strawberries, peas (all 90%+ consumption rate when accessible)
• Moderate risk: Carrots, radishes, cabbage (they'll eat these but prefer softer options)
• Low risk: Onions, garlic, herbs (strong odors and fibrous textures deter them)

Natural ways to deter chipmunks from your garden

Start with homemade repellents that chipmunks find unpleasant but won't harm them. My go-to is a garlic and hot pepper spray—simmer 4 garlic cloves and 1 tablespoon cayenne pepper in 1 quart water for 15 minutes, then strain and spray around garden edges.

Reapply every 3-5 days after rain. For a stronger scent, add 1/2 cup vinegar to the mix. Chipmunks avoid these smells because they're highly sensitive to strong odors, especially those that mimic natural predators.

Physical barriers work best for high-value plants. Wrap 1/4-inch hardware cloth around vulnerable areas like corn stalks or berry bushes, burying it 6 inches deep to prevent digging. For raised beds, use chicken wire with 1-inch holes—it's less expensive and still effective.

The key is to make access difficult without creating a death trap. I always secure barriers with landscape staples rather than nails to avoid damaging plant roots. For container gardens, place them on brick or stone bases to block burrowing underneath.

Plant strategic chipmunk-repelling companions around your garden's perimeter. Daffodils and alliums contain compounds that chipmunks dislike, while marigolds emit a scent they find off-putting. Interplant these with your vulnerable crops—just 3-4 plants per 10-foot section creates an effective barrier.

The bonus? These plants also deter other pests like aphids. For existing gardens, transplant a few foxglove or snapdragons near problem areas—their strong fragrance acts as a natural deterrent.

Try humane removal techniques if chipmunks have already established burrows. Place a live trap near their tunnels with a mix of peanut butter and corn as bait. Release them at least 2 miles away in a wooded area with natural food sources.

For persistent problems, create a false burrow by digging a shallow hole with a 12-inch diameter and lining it with straw—chipmunks will often abandon their original tunnels for this new option. Never use poison or glue traps, as they're inhumane and can harm other wildlife.

Monitor and rotate your methods seasonally. Chipmunks become more active in spring and fall, so increase repellent applications during these periods. In summer, focus on maintaining physical barriers as they may weaken from heat.

The most effective gardens combine 3-4 deterrent methods—for example, using garlic spray on the soil, planting daffodils around edges, and installing hardware cloth around corn. Consistency is key—chipmunks learn quickly, so change your approach if they adapt to one method.