Agastache 'Black Adder' is a standout perennial featuring tall spikes of deep violet purple flowers with darker calyxes that create a rich two tone effect. Its aromatic foliage, long bloom period, and strong drought tolerance make it a top performer in sunny low maintenance and pollinator focused plantings. Height & Spread: 24 - 36 in x 18 - 24 in Bloom Time: Mid summer to fall Light Requirements: Full sun Soil Preference: Well drained soils; prefers lean conditions Watering Needs: Low; highly drought tolerant once established Deer Resistance: High deer resistance Native Status Hybrid cultivar with parentage from North American Agastache species. WILDLIFE & INSECTS Bees Highly attractive to bumblebees and a wide range of native pollinators. Butterflies Provides abundant nectar throughout its long bloom period. Hummingbirds Tubular flowers are a strong attractor for hummingbirds in sunny gardens. Spacing & Landscape Use Spacing Recommendations Space 18 - 24 in apart for upright clump formation. Landscape Placement Ideal for borders, pollinator gardens, and dry landscapes where long lasting color and fragrance are desired. Companion Plants Echinacea purpurea - Adds bold flower form and strong pollinator support. Salvia nemorosa - Provides contrasting bloom timing and vertical structure. Coreopsis verticillata - Enhances fine texture and extends seasonal color. Schizachyrium scoparium - Adds upright movement and warm season interest behind flowering spikes.
