Agastache 'Blue Bayou'

Agastache 'Blue Bayou': Indigo Breeze Hyssop

Compact, upright, and bursting with bloom, Agastache 'Blue Bayou' fills the summer garden with vivid indigo-blue flower spikes from June through September. Each stem is lined with slender, nectar-rich blooms that attract bees, butterflies, and hummingbirds in abundance. Its fine, aromatic foliage forms a tidy mound, while the sturdy upright habit ensures a clean, vertical accent in sunny plantings. Drought tolerant, deer resistant, and effortlessly floriferous, it’s a beautiful solution for hot, dry garden spaces that demand long-lasting colour.

Plant Characteristics:

• Height: 45 cm
• Spread: 35 cm
• Flower Colour: Indigo blue
• Flowering Period: June to September
• Foliage: Green, fine-textured, aromatic
• Sunlight Requirements: Full sun
• Soil Requirements: Well-drained, average to sandy soil

Uses and Benefits: 'Blue Bayou' is ideal for pollinator borders, herb gardens, containers, and xeriscapes. Its compact size and upright form make it perfect for the front of beds or massed for a soft haze of indigo colour. Naturally resistant to deer and thriving in poor soils, this hyssop is a smart, beautiful choice for sustainable, low-maintenance designs that support pollinators and handle the heat.

Companion Plants: Pair Agastache 'Blue Bayou' with Achillea 'Moonshine', Lavandula 'Hidcote Blue', and Festuca 'Elijah Blue' for a cool-toned, drought-tolerant trio that blends texture, fragrance, and long-season bloom.

Care Instructions: Plant in full sun with well-drained soil. Avoid heavy or wet conditions, especially in winter. Deadhead lightly to extend bloom. Cut back in early spring when new growth emerges. No fertilizing required; lean soils enhance flowering and fragrance.

History: Selected for its compact form and exceptional bloom density, 'Blue Bayou' represents the best of modern hyssop breeding—bringing ornamental beauty and ecological function together in a garden-friendly size.

Final Thoughts: Agastache 'Blue Bayou' delivers a summer-long show of indigo-blue spikes with zero fuss—perfect for pollinators, designers, and anyone who loves effortless elegance in full sun.