Mint is a popular herb known for its strong aroma and versatile uses. While its scent deters some insects, it’s a misconception that it repels all animals. Many garden visitors and smaller pests are not deterred and will readily consume mint plants, posing a challenge for gardeners.
Animals That Consume Mint
Deer
Despite common belief, deer sometimes browse on mint plants. They are more likely to eat mint, especially young, tender growth, when other preferred food sources are scarce or during specific seasons. Signs of deer damage include leaves, stems, and flowers that are completely bitten or torn off, often with a ragged appearance. Deer can also trample nearby plants and leave hoof prints in the soil.
Rabbits
Rabbits frequently visit gardens and readily consume mint leaves and stems, often as an occasional treat. Damage from rabbits often appears as clean-cut leaves and stems, distinguishing it from the torn appearance left by deer.
Rodents
Rodents like mice, voles, and squirrels may also nibble on mint plants. Despite mint’s strong scent, often considered a deterrent, these small mammals can still cause damage. Their presence is indicated by gnaw marks, disturbed soil, or chewed leaves and plant bases.
Slugs and Snails
Slugs and snails are common garden pests that feed on mint leaves. These mollusks chew irregular holes in the leaves, and their feeding activity is often accompanied by characteristic silvery slime trails left on the plant or surrounding surfaces. They are most active during damp, cool conditions, typically at night.
Protecting Your Mint Plants
Physical Barriers
Physical barriers offer a reliable method to protect mint plants. Fencing can be effective, with considerations for height and mesh size depending on the target animal; deer fences, for instance, need to be tall, often over six feet. For smaller animals like rabbits or rodents, a shorter fence with a fine mesh buried slightly underground can prevent access. Cloches or row covers provide a protective enclosure for individual plants or rows, safeguarding them from various pests.
Repellents
Repellents can discourage animals, though effectiveness varies and reapplication is often necessary. Commercial repellents are available, and gardeners can also use natural options. Sprays containing neem oil, essential oils like peppermint or lavender, or even a diluted mixture of hot pepper can deter some pests.
Companion Planting
Strategic companion planting can help defend against pests. Some plants, like marigolds, are known to deter pests and can be planted near mint. However, for animals like mice and rats, some sources suggest mint might actually attract them, so results can vary.
Garden Hygiene
Good garden hygiene reduces hiding spots and food sources for pests. Regularly removing plant debris, weeds, and fallen leaves can make the area less appealing to slugs, snails, and rodents seeking shelter. Adequate spacing between plants also improves air circulation, which can reduce conditions favored by some pests.
Monitoring and Early Intervention
Consistent monitoring and early intervention are crucial for effective plant protection. Regularly inspecting mint plants for damage or pests allows for prompt, targeted action before infestations become severe.