Squirrels eat tomatoes primarily because they’re thirsty, not hungry. During hot, dry stretches, squirrels target juicy fruits like tomatoes, cucumbers, and zucchini to get the water they need. The damage typically spikes right before a rain breaks a dry spell, which is a strong clue that hydration is the main motivation. Understanding this makes the problem surprisingly easy to address.
Why Squirrels Target Your Tomatoes
Tomatoes are roughly 95% water, which makes them an ideal drinking fountain for a squirrel in summer heat. You’ll notice the worst damage during prolonged dry periods, especially in July and August when tomatoes are ripening and natural water sources may have dried up. Once rain returns, the raiding often stops on its own.
Squirrels are also opportunistic feeders with excellent memories. Once they discover your tomato patch as a reliable water and food source, they’ll return daily. They tend to be most active in the morning and late afternoon, and they’re exclusively daytime foragers, so if your tomatoes are being hit overnight, something else is responsible.
How to Tell It’s Squirrels and Not Something Else
Squirrel damage has a distinctive calling card: they remove the entire tomato from the plant and carry it somewhere nearby to eat. You’ll often find a partially eaten tomato on your lawn, on a fence post, or under a tree rather than still hanging on the vine. Sometimes they take a single bite from a ripe tomato and abandon it, which is especially maddening.
Other garden pests leave different evidence. Birds peck at tomatoes on the plant, leaving small triangular bite marks, and they rarely destroy an entire fruit. Rats cling to the plant or its support cage and eat from the top of the tomato while it’s still attached, and they do their work at night or around dusk and dawn. Hornworms chew leaves and stems along with the fruit, leaving behind dark droppings. If your tomatoes are vanishing entirely during daylight hours, squirrels are your most likely culprit.
The Simplest Fix: Add a Water Source
Because thirst drives most tomato raids, placing a shallow dish of water or a birdbath near your tomato plants can reduce damage dramatically. Many gardeners report that this single step solves the problem entirely. Keep the water fresh and refill it daily in hot weather, since stagnant water attracts mosquitoes and squirrels will ignore a dirty bowl. A spot with some shade will slow evaporation and keep the water cooler, making it more appealing.
Picking Tomatoes Early
Squirrels prefer ripe, juicy tomatoes over green ones. Picking your tomatoes slightly underripe and letting them finish ripening on a windowsill indoors removes the target before squirrels get to it. Tomatoes that have started to show color (the “breaker” stage, when green begins turning pink or orange) will ripen perfectly well off the vine at room temperature. This doesn’t sacrifice flavor in any noticeable way, and it also protects against cracking from sudden rainstorms.
Using Pepper-Based Repellents
Capsaicin, the compound that makes hot peppers burn, irritates squirrels’ mouths and noses without harming them. Squirrels are mammals, so they experience the heat the same way you do. Birds, on the other hand, can’t taste capsaicin at all, which means pepper treatments won’t bother any feathered visitors to your garden.
The most common approach is sprinkling cayenne pepper or red pepper flakes on the soil around your tomato plants rather than directly on the fruit. This keeps the spice away from the parts you’ll be eating. Some gardeners mix a few tablespoons of cayenne with water to make a paste or a sprayable solution and apply it to plant cages, stakes, or nearby surfaces squirrels would touch.
If you do spray plants directly, avoid applying during the hottest part of the day or early morning when leaves are wet with dew. The combination of pepper residue and strong sun can scorch foliage. Late afternoon on a mild day is the safest window. Every repellent based on pepper needs reapplication after rain or heavy watering, since it washes off easily. Plan on refreshing it every few days during dry weather and after every storm.
Physical Barriers
Hardware cloth or chicken wire cages built around individual plants or raised beds are the most reliable long-term solution. Squirrels can chew through plastic netting, so metal mesh with openings of one inch or smaller works best. Make sure the barrier covers the top as well, since squirrels are excellent climbers and will simply go over a topless fence. Secure the edges to the ground or the raised bed frame so they can’t squeeze underneath.
For a less permanent option, lightweight bird netting draped over tomato cages and secured at the base can slow squirrels down enough to discourage them, though determined squirrels will eventually tear through it. Pairing netting with a water source and pepper repellent creates enough layers of deterrence that most squirrels move on.
Scent-Based Deterrents
Squirrels dislike certain strong smells. Freshly cut human hair scattered around plants (the less recently washed, the more effective) can keep them at bay for a few days. Garlic spray applied to foliage and stakes is another option. These scent methods fade quickly, especially in rain, and work best as part of a combined strategy rather than a standalone fix.
Some gardeners also plant strong-smelling herbs like mint or marigolds near tomatoes as a border. The evidence for this is mostly anecdotal, and a truly thirsty squirrel will walk right past marigolds to get to a ripe tomato. A bowl of water will do more than any herb border.
What Doesn’t Work Well
Motion-activated sprinklers and ultrasonic devices deter squirrels initially, but squirrels are smart and habituate quickly. Within a week or two, most squirrels learn to ignore them. Fake predators like plastic owls have the same problem. Squirrels figure out that a stationary owl never actually moves, and they stop reacting to it within days.
Trapping and relocating squirrels is labor-intensive and largely pointless. New squirrels from the surrounding area will fill the territory within days, and in many areas, relocating wildlife requires a permit. The most effective strategies focus on removing the motivation (providing water), removing the opportunity (harvesting early, using barriers), or making the experience unpleasant enough to redirect them elsewhere (pepper repellents).