What do groundhogs eat in a garden?

Picture walking out to your garden with your morning coffee, only to find half your prized tomato plants sheared off at the stem and a neat little pile of freshly excavated dirt sitting right next to the patio. Your first instinct is to blame the neighborhood rabbits, but something about the scale of the damage feels heavier, more deliberate. You are dealing with a groundhog, known to most folks as the woodchuck.

While these stout mammals are herbivorous rodents that love to forage on accessible vegetation, standard wildlife databases rarely give you a neat menu of specific garden plants they prefer. They are generalist plant eaters, meaning they sample whatever succulent greens happen to be in their path, so hunting through textbooks for a precise list of their favorite salad greens will leave you empty-handed.

Instead of worrying about whether they prefer your zucchini over your beans, a better approach is to understand how they operate. They do not just drop by for a quick snack and vanish. They build elaborate subterranean burrow systems right under your shed, deck, or rock wall, turning your property into their permanent residence. That permanent stay comes with a biological catch, too. Groundhogs can carry and transport microscopic roundworm larvae in their tissues after foraging in soil contaminated by other wildlife, which simply means that managing these animals involves more than just keeping them away from your vegetables.

Before you start building fences or buying deterrents, you need to make sure a groundhog is actually the culprit causing your headaches. Catching one in the act of raiding your garden is rare, so you have to play detective and look for physical evidence left behind in the soil.

Start by checking the ground around the damage for footprints. A groundhog track is usually quite distinct if you find it in soft mud or damp soil. The front feet will show four toes, while the hind feet show five. If you are trying to use scat to identify the visitor, keep in mind that color is usually a terrible indicator because it changes entirely based on what the animal ate that morning. Look instead at the shape and location of the droppings, which tend to be tubular and found near burrow entrances rather than scattered randomly across the lawn.

Speaking of burrows, look for large entry holes near foundations, stone walls, or overgrown fence lines. If you suspect a burrow is active, a simple monitoring trick involves loosely placing crumpled newspaper or cross-taped duct tape over the opening. Leave it alone for at least three consecutive days of clear weather. If the paper remains completely undisturbed, the burrow is usually inactive, meaning the animal has moved on and you can safely fill the hole.

When you finally confirm you have a groundhog living under your porch and raiding your vegetables, the temptation is to grab a live trap or head to the garden center for the nearest electronic gadget. Most folks want a quick fix, but keeping them out usually requires a mix of blocking them, cleaning up the yard, keeping an eye on things, and sometimes removing the animal. Think of it like building layers of security rather than relying on one magic trick.

Stopping them starts with exclusion, which is the best way to get long-term peace of mind. A wire mesh fence around your garden plot can work wonders, but you generally need to bury it underground or angle it outward to keep these animals from simply digging straight underneath it. Wire screening can also block them out from underneath sheds and decks. Clearing out brush piles, tall grass, and weed borders makes your yard look less like prime real estate for a den.

As for trapping and relocation, pump the brakes before you open a live trap. Moving a problem animal to a distant park might feel humane, but it often violates state wildlife regulations, increases stress and mortality for the animal, and simply dumps your neighborhood problem onto someone else. Complete eradication of a wildlife population is rarely achievable or ecologically wise anyway, so your real goal should be reducing the damage down to a level you can comfortably live with.

There are moments when a do-it-yourself approach crosses the line into territory best left to the professionals. If you notice that groundhog burrows are actively undermining your home foundation, patio slabs, or retaining walls, structural safety is now on the line.

You should also involve a licensed wildlife control operator or local extension specialist when state laws require professional handling, trapping, or removal of wild mammals. Regulations vary heavily depending on your region, and some jurisdictions restrict what you can legally do on your own property. Furthermore, wild groundhogs are capable of carrying rabies and other diseases that pass to humans. If you or a pet has a direct encounter involving a bite or scratch, or if you are cleaning up areas contaminated by animal feces, skip the guesswork and contact public health authorities or a medical clinician immediately. When cleaning up soil or debris near dens, always wear protective gear, including rubber boots, disposable gloves, and a proper respirator mask, to keep yourself safe from microscopic hazards in the dust.