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Groundhogs have a strong aversion to powerful scents, including garlic, ammonia, vinegar, hot peppers like cayenne, and predator urine. Various herbs such as rosemary, lavender, basil, mint, sage, thyme, and oregano can also act as deterrents. You can strategically use these odors around your property by planting these crops near your garden and by the entrances to groundhog burrows. Commercially available repellents offer another option, and for best results, scent-based deterrents should be used alongside other preventive measures.

Groundhogs are most active during the warmer months, from spring through fall. On a daily basis, they exhibit peak activity in the early morning (dawn) and late afternoon (dusk), which are their primary feeding times. They tend to stay in their cool burrows during the hottest, sunniest parts of the day. Groundhogs hibernate during the winter, typically retreating to their dens from October or November until mid to late February.

Some of the plants listed above, like daffodils, are poisonous to many animals if eaten. But wild animals instinctively avoid them, for the most part. Household pets don’t always have the same survival instinct, which is why it’s a good idea to familiarize yourself with common plants that pose a danger to cats and dogs.