Anise Hyssop Seeds (Agastache foeniculum)

Anise Hyssop (Agastache foeniculum) is a fragrant perennial herb prized for its showy purple flower spikes and highly attractive foliage. Blooming midsummer through fall, it draws bees, butterflies, and hummingbirds to the garden with long-lasting floral displays. Perfect for pollinator gardens, cottage borders, sensory plantings, and meadow landscapes, this hardy perennial thrives in sunny, well-drained soil and offers strong vertical interest with minimal maintenance.

Features

• Tall purple flower spikes that bloom through summer and fall.
• Non-GMO Agastache foeniculum seed variety.
• Highly attractive to bees, butterflies, and hummingbirds.
• Hardy perennial tolerant of drought once established.
• Aromatic foliage suitable for sensory gardens.
• Ideal for borders, wildflower meadows, and pollinator habitats.

Specifications

• Common Name: Anise Hyssop, Giant Hyssop
• Scientific Name: Agastache foeniculum
• Plant Type: Perennial herb
• USDA Zones: 4–9
• Bloom Color: Lavender to purple spikes
• Foliage: Fragrant green leaves
• Height: 2–4 feet
• Spread: 12–18 inches
• Heirloom: Yes
• GMO Status: Non-GMO
• Organic: Not certified organic
• Light Requirements: Full sun to light shade
• Soil Preference: Well-drained, average soil
• Water Needs: Low to moderate once established
• Bloom Season: Summer through fall
• Pollinator Friendly: Yes (bees, butterflies, hummingbirds)
• Drought Tolerance: High after establishment
• Plant Spacing: 12–18 inches apart
• Seed Viability: 2–3 years when stored properly

Planting Guide

• Sow indoors or direct sow outdoors after frost danger passes.
• Press seeds lightly onto the soil surface—do not cover deeply.
• Provide light for germination; avoid burying the seed.
• Keep soil moist until seedlings establish (germination 7–21 days).
• Transplant outdoors when seedlings have 2–3 true leaves.
• Choose full sun for best bloom and vertical growth.
• Water regularly during early growth; reduce watering as it matures.
• Deadhead spent blooms to encourage continued flowering.
• Allow late-season seed heads to mature if self-seeding is desired.