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Anise Hyssop

Agastache foeniculum

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Anise Hyssop (Agastache foeniculum) at Landsburg Landscape Nursery

Anise Hyssop flowers

Anise Hyssop flowers

(Photo courtesy of NetPS Plant Finder)

Height:  3 feet

Spread:  32 inches

Sunlight:  full sun  partial shade  full shade 

Hardiness Zone:  2

Other Names:  Giant Hyssop, Licorice Mint

Ornamental Features

Anise Hyssop has masses of beautiful spikes of lightly-scented powder blue flowers rising above the foliage from mid summer to mid fall, which are most effective when planted in groupings. The flowers are excellent for cutting. Its attractive fragrant pointy leaves remain dark green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Anise Hyssop is an herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This plant will require occasional maintenance and upkeep, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting bees, butterflies and hummingbirds to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Self-Seeding

Anise Hyssop is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Herb Gardens
  • Container Planting

Planting & Growing

Anise Hyssop will grow to be about 32 inches tall at maturity, with a spread of 32 inches. It tends to be leggy, with a typical clearance of 1 foot from the ground, and should be underplanted with lower-growing perennials. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 6 years.

This plant performs well in both full sun and full shade. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. It is not particular as to soil type, but has a definite preference for alkaline soils. It is somewhat tolerant of urban pollution. This species is native to parts of North America. It can be propagated by division.

Anise Hyssop is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden. Be aware that in our climate, most plants cannot be expected to survive the winter if left in containers outdoors, and this plant is no exception. Contact our store for more information on how to protect it over the winter months.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Massing  Garden  Herb  Container 
Applications
Flowers  Foliage Color  Attracts Wildlife 
Ornamental Features