Agastache rugosa, also known as Korean Mint or Wrinkled Giant Hyssop, is a showy aromatic perennial treasured for its tall spires of violet purple flowers and its ability to attract pollinators in abundance. Height & Spread: 3 - 4 ft x 1.5 - 2 ft Bloom Time: Mid summer through early fall (July to September) Light Requirements: Best in full sun, tolerates partial shade Soil Preference: Prefers well drained soils; tolerates average to slightly sandy or loamy soils Watering Needs: Moderate water needs during establishment; drought-tolerant once established Deer Resistance: Strongly resistant due to licorice-scented leaves NATIVE STATUS Originates from East Asia; however, it is closely related to North American native Agastache species. Due to its similar form, long flowering period, and appeal to native wildlife, it is often used in ecologically inspired and pollinator friendly gardens. WILDLIFE & INSECTS Butterflies Favorite among butterflies, especially Monarchs, Red Admirals, Skippers, and Swallowtails. The long tubular flowers provide an easy nectar source that supports both local and migratory butterflies throughout late summer. Bees Attracts bumblebees, leafcutter bees, honeybees, and many solitary native bees. Its late bloom time ensures continued forage availability during critical pollination and pre winter periods. Hummingbirds While not as heavily visited as some tubular red flowers, Ruby-throated Hummingbirds and others will still stop to feed especially when planted in mass or near other nectar rich species. Beneficial Insects Supports lacewings, hoverflies, and tiny parasitic wasps. These natural pest predators help manage aphid, mite, and caterpillar populations in nearby plants. SPACING & LANDSCAPE USE Spacing Recommendations Space plants 18 - 24 inches apart to allow full spread and airflow. This helps prevent mildew and gives pollinators easy access to flower spikes. Landscape Placement Place in pollinator gardens, herbal borders, meadow style plantings, or sunny mixed perennial beds. Plant in groups of 3 or more for stronger pollinator draw and visual cohesion. COMPANION PLANTS Pycnanthemum muticum (Mountain Mint) - Another aromatic pollinator favorite with silvery foliage. Symphyotrichum oblongifolium (Aromatic Aster) - Late blooming native for extended seasonal interest. Eutrochium dubium (Little Joe) - Tall structural plant with heavy butterfly traffic. Solidago nemoralis (Gray Goldenrod) - Offers bright yellow contrast and excellent drought tolerance. Lavandula angustifolia (English Lavender) - Complements with silvery foliage and summer flowers, attracts bees. Calamintha nepeta (Calamint) - Compact aromatic filler that blooms all season for bees and hoverflies. Schizachyrium scoparium (Little Bluestem) - Native grass that adds movement, texture, and winter interest.
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