The perennial coreopsis is a pretty flowering plant, with beautiful golden blooms. It is also an excellent deer repeller, making it a popular choice of gardeners who are fed up with deer munching in their yards. Threadleaf coreopsis is one of the rarely damaged deer resistant plants, while lance coreopsis is seldom severely damaged.
Coreopsis is known for its long blooming season, which lasts throughout the summer and into the fall. Plants prosper in full sun, growing about 18 to 24 inches tall, though size varies by variety. The Moonbeam species features tiny, yellow blossoms and Zagreb is characterized by large flowers that are mustard-colored. Gardeners in northern climates often choose this second type because it is a hardier plant.
These cheery plants are perfect for use as borders and also look nice when cut and displayed within the home. They are suitable for use in climate zones four to nine and with the many species available, gardeners have some attractive choices. There is even the C. rosea species that features pink flowers containing yellow centers. One of the newest introductions is the red C. verticillata.
In general, these deer repellent plants do not experience problems and are easy to grow and maintain. However, they can sometimes fall victim to fungal diseases, slugs, and snails. Longer blooming results from deadheading the plant, which can be a mess due to the many blooms. It is easier to cut back the entire plant once the first flush of blooms subsides.
Many gardeners consider coreopsis to be one of the best native wildflowers for incorporation into a garden. Whether they select a compact species or one that is sprawling, gardeners will be pleased at the deer-deterring feature of these well-formed plants. Dephinium, false indigo, and echinacea make nice companion plants as do vertical plants like the daylilly or allium.