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Agastache foeniculum (anise hyssop)

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Technical sheet - Agastache
Species Distribution Map: Click to enlarge
Map Color Key © 2013 BONAP

Agastache foeniculum

anise hyssop

(syn. Stachys foeniculum)

An upright, clump-forming perennial native to parts of the upper Midwest and Great Plains region. Lavender to purple flowers are densely packed along showy, cylindrical, terminal spikes mid to late summer. Medium green, lanceolate foliage remains clean throughout the season and carries a refreshing anise scent, attracting hummingbirds and butterflies.

SIZE
Agastache foeniculum LP50 - 50 per flat Availability
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Height

2-4 Feet

Spread

18-36 Inches

Spacing

12-15 Inches

Bloom Color

Violet

USDA Hardiness Zone 4-8

anise hyssop Interesting Notes

Agastache foeniculumis a showy and long blooming (up to 8 weeks!) perennial that is an absolute staple in mesic and xeric full sun plantings. 

This taprooted prairie forb is found in northern North America, primarily the loamy soils of the Midwest and Great Plains. 

Agastache foeniculum has been a dependable and beautiful element of our full sun trial gardens. We don't irrigate our gardens so this tough plant has survived summer droughts year after year. Its aromatic, anise scented leaves often leave it untouched by the deer and other critters that pass through. We love that this plant maintains itself year after year through non-agressiveself seeding. 

The lavender purple blooms of Agastache foeniculum are pollinator magnets! The nectar and pollen supports a wide range of native bees, flies, and Lepidoptera. 

Agastache foeniculum Growing and Maintenance Tips

Easily grown in average, dry to medium moisture, well-drained soils in full sun to part shade (though best in full sun). Good soil drainage is essential. Water well upon planting and regularly until established; plants tolerate dry soils once established. Deadhead spent flowers to promote additional bloom.

Good Substitutions

hyssop Agastache 'Blue Fortune'
Hyssop Agastache 'Golden Jubilee'
hyssop Agastache 'Purple Haze'
hyssop Agastache 'Blue Boa'

Key Characteristics & Attributes

Full Sun
Full Sun
Part Sun
Part Sun
Songbird-friendly
Songbird-friendly
Pollinator-friendly
Pollinator-friendly
Deer Resistant
Deer Resistant
Hummingbird-friendly
Hummingbird-friendly
Drought Tolerant
Drought Tolerant
Fragrant
Fragrant
Cut Flower
Cut Flower
Summer
Summer

Additional Information

Soil Moisture Needs
Average
Dry
Green Infrastructure
Green Roof
Meadow/Prairie
Plug Type
Landscape Plug™
Attributes
Native to North America
Edible
Season of Interest (Flowering)
Late Summer
Propagation Type
Vegetative