Coreopsis, commonly known as tickseed, is a genus of flowering plants in the Asteraceae family. It is prized for its bright, daisy-like blooms and low-maintenance nature, making it a popular choice for gardens and landscapes. One of the key considerations for gardeners is whether Coreopsis is deer-resistant, as deer can cause significant damage to ornamental plants.
Coreopsis is often listed as a deer-resistant plant due to several inherent characteristics that make it less appealing to deer:
The foliage and flowers of Coreopsis contain compounds that impart a slightly bitter taste, which deer typically avoid. Additionally, the leaves have a somewhat coarse texture, further deterring deer from feeding on them.
Some Coreopsis species emit mild aromatic scents that are unappealing to deer. While not as strong as plants like lavender or rosemary, these subtle odors can contribute to its deer-resistant reputation.
Deer tend to favor plants with high moisture and nutrient content, such as hostas or daylilies. Coreopsis, however, has relatively low water content and fewer nutrients compared to more palatable options, making it a less attractive food source.
While Coreopsis is generally considered deer-resistant, its effectiveness can vary depending on external factors:
In areas with high deer populations or limited natural food sources, deer may resort to eating plants they would normally avoid, including Coreopsis. Hunger can override their natural preferences.
Young, tender Coreopsis plants may be more vulnerable to deer browsing, especially in early spring when other food sources are scarce. Mature plants with established foliage are less likely to be targeted.
Deer feeding habits can vary by region. In some areas, deer may develop a taste for Coreopsis if it is consistently available, while in others, they may ignore it entirely.
Gardeners can take additional steps to further protect Coreopsis from deer:
Pairing Coreopsis with strongly aromatic or highly deer-resistant plants, such as lavender, sage, or yarrow, can create a less appealing environment for deer.
Using fencing, netting, or repellent sprays can provide extra protection, especially in areas with persistent deer pressure.
Keeping Coreopsis healthy through proper watering, pruning, and fertilization can reduce its attractiveness to deer, as stressed plants may emit signals that draw herbivores.
While no plant is completely deer-proof, Coreopsis possesses several qualities that make it a reliable choice for deer-prone gardens. Its bitter taste, coarse texture, and low nutritional value contribute to its resistance, though external factors like deer population and food availability can influence its vulnerability. By understanding these dynamics, gardeners can make informed decisions about incorporating Coreopsis into their landscapes.
