Alphabetical Plant Listing

Agastache (Hyssop)

Anise Hyssop, Anise Mint, Blue Giant Hyssop, Fragrant Giant Hyssop, Hummingbird Mint (Agastache)


Agastache are beautiful, aromatic herbaceous perennials, rich of many qualities: broad color palette, lovely vertical lines, abundant blooms, drought and heat tolerance, great versatility. And they are not only pleasing to people - bees, hummingbirds and butterflies adore them too.

  • There are about 30 species of Agastache but only 4 are typically found in our gardens: Agastache foeniculum, Agastache mexicana, Agastache rugosa and Agastache rupestris.
  • All have spires of two-lipped flowers, delicately shaded by darker calyxes colors, creating a harmonious ensemble of colorful spikes rising above foliage mounds and invariably drawing the eye.
  • Agastache plants provide a bold visual impact in beds, borders, wildflower gardens, herb gardens, butterfly gardens or prairie gardens over a very long season, typically from early summer to early fall. They create a stunning effect when mixed with other perennials or planted en masse. They are perfect for prairie plantings where they will self-seed and thrive without maintenance.
  • Agastache attract streams of hummingbirds, butterflies and other beneficial pollinators.
  • Agastache are easily grown in full sun, in average, dry to medium moisture, well-drained soils. Good drainage is important!
  • Drought, dry soil and heat tolerant once established.
  • Agastache are generally disease and pest free (they might occasionally be subject to powdery mildew) and resistant to deer and rabbits.
  • Deadhead spent flowers to promote additional bloom. Agastache plants will easily self seed in good growing conditions.

Guide Information

Hardiness 5 - 10
Heat Zones 5 - 12
Climate Zones 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Agastache - Hyssops
Exposure Full Sun
Season of Interest Summer (Early,Mid,Late)
Fall
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Fragrant, Showy
Tolerance Deer, Drought, Rabbit
Attracts Butterflies, Hummingbirds
Landscaping Ideas Beds and Borders, Patio and Containers
Garden Styles Gravel and Rock Garden, Informal and Cottage, Mediterranean Garden, Prairie and Meadow

Photo: / 123RF Stock Photo

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.

Guide Information

Hardiness 5 - 10
Heat Zones 5 - 12
Climate Zones 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Agastache - Hyssops
Exposure Full Sun
Season of Interest Summer (Early,Mid,Late)
Fall
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Fragrant, Showy
Tolerance Deer, Drought, Rabbit
Attracts Butterflies, Hummingbirds
Landscaping Ideas Beds and Borders, Patio and Containers
Garden Styles Gravel and Rock Garden, Informal and Cottage, Mediterranean Garden, Prairie and Meadow
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