Scabiosa, commonly known as Pincushion Flower, is a popular perennial valued for its long blooming season and unique, delicate flower heads. Available in various species, these plants are frequently incorporated into flower beds and borders for their visual appeal and ability to attract pollinators. For many gardeners, the primary concern when selecting any plant is its susceptibility to deer, particularly where deer browsing is frequent.
Deer Preference for Scabiosa
Pincushion Flowers are generally classified as deer-resistant. Deer typically avoid plants with unappetizing characteristics, and Scabiosa exhibits several deterrent qualities. The foliage and stems often contain a slightly bitter sap, making them unpalatable to browsing deer. This inherent bitterness acts as a natural defense mechanism, as deer rely heavily on taste and smell to determine food sources.
The strong scent of the plant also helps dissuade deer from feeding. Furthermore, some varieties have fine, hairy textures on their leaves and buds, which deer find unpleasant to chew. This combination of bitter taste, strong fragrance, and texture places Scabiosa low on the preferred forage list. However, “deer-resistant” is not a guarantee of absolute immunity.
When Deer Ignore Plant Classifications
Deer browsing habits are heavily influenced by the availability of desirable food sources and their hunger level. Even a deer-resistant plant like Scabiosa can become a target when environmental conditions are stressful. During periods of drought or deep winter snow, when natural food supply is scarce, deer often disregard their usual preferences. This is especially true in late winter and early spring, when new growth is tender and appealing.
Local population density also plays a significant role; a high concentration of deer increases competition, forcing them to eat plants they would otherwise pass over. New plantings are particularly vulnerable, as the soft, newly-established growth has not yet fully developed the bitter compounds that provide resistance. In these high-pressure situations, the deer’s drive to consume sufficient calories overrides its natural aversion.
Simple Strategies for Garden Protection
Gardeners can implement several active strategies to reinforce the natural resistance of Pincushion Flowers and other vulnerable plants.
Physical Barriers
Physical barriers are one of the most reliable methods. Lightweight plastic deer netting, supported by stakes, can be installed around new or small plantings to deter browsing during the establishment phase. For larger areas, thin-mesh fencing that is at least seven feet tall is necessary to prevent deer from jumping over the barrier.
Repellent Sprays
Repellent sprays offer another layer of protection, working by taste or smell to make the plant undesirable. Taste-based repellents often contain putrescent egg solids or hot pepper extract, requiring direct application to the foliage. Scent-based options, which may use botanical oils like peppermint, clove, or cinnamon, can be applied to the plants or surrounding structures to confuse or repel deer. Rotating the type of repellent used every few weeks prevents deer from becoming accustomed to a single deterrent.