Astilbe is a favored perennial, celebrated for its elegant, feathery plumes and ability to thrive in shaded environments. These plants offer vibrant displays of white, pink, red, or purple, bringing visual interest to woodland settings and shady borders. Gardeners often wonder about astilbe’s susceptibility to deer browsing. This article clarifies astilbe’s interaction with deer and offers protection strategies.
Astilbe’s Natural Deer Resistance
Astilbe is considered deer-resistant, making it a reliable choice for gardens in areas frequented by these animals. This resistance comes from characteristics that make it unappealing to deer. The foliage often has a texture and taste deer find distasteful, and some varieties emit a strong scent that deters them. Rutgers University rates astilbe as “Seldom Severely Damaged,” indicating that while minor browsing might occur, significant harm is unlikely.
When Deer Might Browse Astilbe
While astilbe is recognized for its deer resistance, no plant is entirely deer-proof. Deer are opportunistic browsers and may eat plants they typically avoid if preferred food sources become scarce. This can happen during drought, harsh winters, or in areas with high deer populations where competition for food intensifies. Young, newly planted astilbes might also be more vulnerable than established plants. In such challenging conditions, a hungry deer might sample astilbe, but this is usually a response to limited options rather than a preference.
Protecting Astilbe from Deer
Several proactive measures can help safeguard astilbe and other plants from deer browsing. Physical barriers, such as fencing, can be highly effective, though it should be at least 8 feet tall to deter deer from jumping over. Repellents offer another layer of protection, working through strong odors or unpleasant tastes that deter deer without causing harm. Commercial options are available, and some gardeners use homemade mixtures containing ingredients like eggs, garlic, or peppermint oil, which require reapplication after rain or as new growth emerges.
Companion planting involves placing astilbe alongside other plants known for their deer-resistant qualities. Species with aromatic foliage, such as lavender, rosemary, or alliums, can help mask the scent of more appealing plants, making the garden less attractive to deer. Ensuring astilbes are healthy through proper watering, mulching, and fertilization also contributes to their resilience, as deer tend to target stressed or weaker plants.