Why Deer Eat Perennial Plants
Deer are herbivores with a varied diet, and perennial plants, offering a consistent source of food throughout the growing season, are often a prime target. Their browsing habits are influenced by factors such as food availability, season, and the specific nutritional content of the plants. When their preferred food sources are scarce, deer will readily turn to perennial gardens for sustenance.
The palatability of perennial plants to deer can vary significantly based on their texture, scent, and taste. Tender new growth, fragrant foliage, and abundant flowers are particularly attractive to deer. Understanding these preferences is crucial for gardeners aiming to protect their perennial collections from unwanted attention.
Deer-Resistant Perennial Characteristics
Certain characteristics make perennial plants less appealing to deer, effectively deterring them from browsing. These traits often include tough or fuzzy foliage, strong or unpleasant scents, and poisonous or bitter components. Plants with silvery or gray-green leaves, deeply lobed or prickly textures, and aromatic herbs are generally considered more deer-resistant.
For example, perennials with fuzzy leaves like Lamb's Ears (Stachys byzantina) or those with strong scents such as Lavender (Lavandula) and Rosemary (Rosmarinus officinalis) are often left untouched by deer. Similarly, plants with toxic properties, like Foxglove (Digitalis purpurea), are naturally avoided due to their unpalatable nature.
Best Perennial Plants for Deer-Resistant Gardens
Creating a beautiful garden that deer will avoid is achievable by selecting perennial plants known for their deer resistance. These selections offer vibrant blooms and lush foliage without becoming a deer's regular buffet. Focusing on plants with specific characteristics that deer dislike is key to a successful, deer-proof perennial landscape.
Some of the most reliable deer-resistant perennial choices include Astilbe, Bleeding Hearts (Dicentra spectabilis), Columbine (Aquilegia), Coneflower (Echinacea), Daylilies (Hemerocallis) in some varieties, Hellebores, Hostas (though some varieties are more susceptible), Iris, Peonies, and Salvia. These plants provide a wide range of colors, textures, and bloom times, ensuring a visually appealing garden throughout the seasons.
When Deer Damage Perennial Gardens
Even with careful plant selection, deer can sometimes cause damage to perennial gardens, especially during periods of high deer population or limited natural food sources. This damage typically manifests as nipped buds, stripped bark, and browsed foliage, which can significantly weaken or even kill plants if left unchecked.
Signs of deer damage include ragged edges on leaves where they have been torn rather than cleanly cut, hoof prints in soft soil, and droppings (pellets) found in or near the garden. The height of the damage can also be an indicator; deer typically browse at heights between 2 and 6 feet, so damage higher up on shrubs or trees may be from deer rather than rabbits.
