Blue Boa Agastache

Blue Boa Agastache (Agastache 'Blue Boa') is a showstopping perennial hyssop celebrated for its exceptionally tall, dense flower spikes of deep violet-blue that rise dramatically above compact, fragrant foliage. One of the most impressive selections in the Agastache family, 'Blue Boa' produces some of the longest and widest flower spikes in its class — a bold architectural presence in the summer and fall garden. The mint-scented, gray-green foliage adds texture and fragrance even when not in bloom, and the upright habit makes it a natural focal point in beds, borders, or pollinator gardens.

These Professional Grade 4" plants are grown to the highest nursery standards, delivering robust, well-developed root systems that establish quickly and thrive season after season. Blue Boa Agastache excels in full sun locations with well-drained soil and performs beautifully in both in-ground beds and large patio containers. Its outstanding heat tolerance and drought-resilience once established make it a low-maintenance powerhouse for warm, sunny gardens.

• Towering Violet-Blue Flower Spikes: Among the largest and most dramatic flower spikes of any Agastache variety, providing bold vertical color and a striking focal point in the landscape from summer through fall.
• Irresistible to Pollinators: A magnet for hummingbirds, bees, and butterflies, making it an essential addition to any wildlife-friendly or pollinator garden.
• Heat & Drought Tolerant: Once established, Blue Boa is highly resilient to summer heat and dry conditions, thriving with minimal supplemental watering in well-drained soils.
• Fragrant Foliage Year-Round: The aromatic, mint-anise scented leaves release a pleasant fragrance when brushed, adding sensory appeal to borders and pathways throughout the growing season.
• Long Bloom Season: Flowers from midsummer well into fall, providing months of vibrant color long after many other perennials have finished, with dried seed heads offering winter interest for birds.

These 4" healthy live plants thrive in full sun with well-drained to average soil. Water regularly until established, then reduce to occasional deep watering. Hardy in USDA Zones 6–10; mature height 24–36 inches with a spread of 18–24 inches. Bloom time runs from midsummer through early fall. Deadheading is optional — spent spikes can be left for birds.