Agastache foeniculum

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Agastache Foeniculum 4 Agastache Foeniculum 3 Agastache Foeniculum 6 Agastache Foeniculum 5 Agastache Foeniculum 7 Agastache Foeniculum 8 Agastache Foeniculum 2

Agastache foeniculum

Common Name: Fragrant Giant Hyssop

Agastache foeniculum, commonly called Fragrant Giant Hyssop or Anise Hyssop, is a perennial herb that grows 2 to 4 feet tall. It has aromatic, licorice/anise-scented leaves and produces spikes of lavender to purple flowers from mid to late summer. This species is found in prairies, open deciduous woodlands, and along roadsides, favoring well-drained, sandy to loamy soils. Traditionally, it has been used for medicinal teas and as a culinary herb. In landscaping, it is prized for attracting pollinators, such as bees and butterflies, and is often used in perennial borders, herb gardens, and naturalized plantings.

Characteristics

Product Form Plant, Seed
Type Forb
Sun Full Sun, Partial Sun
Soil Loam, Sand/Gravel
Moisture Dry, Mesic
Average Max Height (inches) 45
Suggested Plant Spacing (inches) 18
Bloom month(s) June, July, August, September, October
Bloom Color or Type Violet
Dominance Medium

Range Maps

Sowing Information

For most homeowners, the recommended method is to hand-broadcast seed at a minimum rate of 16–64 PLS (Pure Live Seed) ounces per acre. To ensure even coverage, broadcast the seed in perpendicular passes across the site. Grass seed should be broadcast first and lightly raked into the soil. Afterward, apply a light mulch layer using clean, seed-free straw or, preferably, our native Little Bluestem straw, available at our retail garden centers. Once mulching is complete, broadcast native wildflower seed over the area without raking it in. A good rainfall or thorough watering will provide sufficient soil contact for successful germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.