Hysopp 'Black Adder' (Agastache rugosum x foeniculum 'Black Adder') is a captivating hybrid that combines the best traits of its parent species. This perennial is celebrated for its striking, dark purple to black flower spikes and aromatic foliage, adding dramatic color and fragrance to the garden.
The 'Black Adder' cultivar thrives in full sun and well-drained soils, showcasing its adaptability and drought tolerance once established. It features an upright, clumping growth habit with lance-shaped leaves that emit a pleasant anise-like scent when crushed. The plant’s dense flower spikes provide a bold visual interest and serve as a beacon for pollinators.
Ecologically, this hybrid is highly beneficial to garden ecosystems. Its vibrant flowers attract a wide array of pollinators, including bees, butterflies, and hummingbirds, making it a valuable plant for supporting these important insects. Additionally, the aromatic foliage can help repel some garden pests, enhancing its utility in herb and vegetable gardens.
In landscaping, 'Black Adder' is perfect for adding vertical interest and rich color to garden beds, borders, and herb gardens. Its distinctive dark flowers and fragrant leaves make it an eye-catching choice for creating sensory-rich garden spaces. By incorporating this hybrid into your garden, you can enjoy its aesthetic appeal and ecological benefits while contributing to the health of local pollinator populations.