Will Squirrels Eat My Garden: 10 Plants They Avoid and How to Protect Others

If your garden contains common favorites like tomatoes, corn, or lettuce, squirrels will see them as an all-you-can-eat buffet. 🐿️ These rodents are opportunistic foragers, drawn to high-calorie, easy-to-access foods—especially when natural sources like nuts or berries are scarce. The good news?

Their preferences create clear patterns: they’ll ignore herbs like rosemary or thyme, and even some flowers like daffodils (which contain toxic alkaloids). The key to squirrel-proofing your garden lies in understanding these behavioral quirks and leveraging their natural avoidance of strong smells or bitter compounds.

For immediate protection, consider physical barriers like chicken wire around vulnerable plants or natural repellents such as cayenne pepper sprays. I’ve found that planting companion herbs like mint or garlic around high-risk crops creates a sensory deterrent that works almost as well as commercial solutions.

The goal isn’t just to chase squirrels away—it’s to make your garden less appealing than their next-door neighbor’s.

Why squirrels target certain garden plants

Squirrels are drawn to garden plants based on three key factors: nutritional value, ease of access, and scent. Their diet in the wild consists of high-fat, high-carbohydrate foods like nuts, seeds, and fruits—so anything resembling these becomes a target.

For example, a ripe tomato (which contains about 4% sugar) triggers their foraging instincts just as effectively as an acorn. 🌱 The texture also matters: squirrels prefer tender, young shoots over mature, fibrous leaves because they’re easier to chew and digest.

Scent plays a surprisingly large role in their decision-making. Squirrels have an exceptional sense of smell, with olfactory receptors that can detect volatile organic compounds (VOCs) in plants. Highly aromatic herbs like basil or oregano emit strong VOCs that mask the scent of nearby vulnerable crops, effectively camouflaging them.

Conversely, plants with bitter or toxic compounds (such as daffodils or foxglove) contain chemical defenses that squirrels instinctively avoid—these compounds can cause nausea or even poisoning if ingested.

The science behind their avoidance is fascinating. Toxic plants often contain alkaloids or glycosides, which disrupt a squirrel’s digestive system. For instance, daffodils produce lycorine, a compound that causes vomiting within 15-30 minutes of ingestion—a harsh lesson that squirrels remember.

Meanwhile, strongly scented plants like lavender release linalool and camphor, which irritate their nasal passages, making the garden feel inhospitable. 🦨 This is why squirrels will happily nibble on lettuce but leave rosemary alone—it’s not just about taste, but about survival instincts.

Seasonality also shifts their behavior. In late summer and early fall, when natural food sources like nuts become abundant, squirrels may become less aggressive toward garden plants. However, during spring and early summer, when food is scarce, they’ll target almost anything edible.

This is why gardeners often see the most damage in May or June, when young seedlings are tender and full of nutrients. Understanding these patterns helps you predict—and prevent—squirrel raids.

One often-overlooked factor is the visual contrast of plants against their surroundings. Squirrels use color cues to identify food sources: bright red tomatoes or purple eggplants stand out against green foliage, signaling "high-value target."

In contrast, plants with muted tones (like silver sage or gray-green thyme) blend into the landscape, making them less noticeable. This is why planting silver-leaved herbs around vulnerable crops can create a natural camouflage effect.

Finally, consider the physical structure of your garden. Squirrels are agile climbers and can leap up to 6 feet in a single bound, so low-growing plants are safer than those with vines or tall stalks.

For example, a bush bean plant (which grows to 2-3 feet) is far less appealing than a corn stalk (which can reach 7-8 feet). By designing your garden with these factors in mind, you can significantly reduce squirrel damage without resorting to harsh chemicals.

Natural squirrel deterrents for your garden

Start with physical barriers like chicken wire or fine mesh netting around high-value plants. For raised beds, wrap the wire around the edges before planting—squirrels can’t dig through it, and it’s nearly invisible once covered with mulch.

I’ve had great success with 1/4-inch hardware cloth for smaller plants like lettuce or strawberries, as it blocks their digging while still allowing water and air to reach the soil. 🔥 For taller crops like corn or sunflowers, create a cage-like structure with wire hoops and netting, which deters climbing without harming the plants.

For a chemical-free repellent, try a pepper-based spray made from 1 tablespoon cayenne pepper, 1 tablespoon dish soap, and 1 quart water. Shake well and spray directly on leaves and around the base of plants.

The capsaicin irritates their nasal passages and mouth, making your garden feel like a no-go zone.

Reapply every 3-5 days or after rain, and always test on a small area first to avoid damaging sensitive plants. 💧 Another effective option is predator urine (like coyote or fox urine), which you can find at garden centers—squirrels associate this scent with danger and will avoid treated areas.

Companion planting is one of the most underrated squirrel deterrents. Place strongly scented herbs like mint, rosemary, or thyme around vulnerable crops—their pungent aromas mask the scent of food and confuse squirrels. I recommend planting garlic or chives near tomatoes and peppers, as their sulfur compounds repel rodents naturally.

Even marigolds or nasturtiums work well, as their bitter taste and strong fragrance make them unappealing. 🌿 The key is to create a sensory barrier that makes your garden feel like a squirrel-free zone without chemicals.

If squirrels are digging up bulbs like tulips or daffodils, try hot pepper flakes mixed into the soil at planting time—they’ll deter digging without harming the plants. For seedling protection, sprinkle coffee grounds around the base; the strong smell repels squirrels while adding nutrients to the soil.

And if all else fails, consider a motion-activated sprinkler, which startles squirrels with a gentle spray of water when they approach. 💫 This method is humane, reusable, and works even in large gardens where other solutions might be impractical.