Overview
Agastache nepetoides is a upright, clump-forming perennial in the genus Agastache, part of the Lamiaceae family, with green, aromatic foliage. It typically grows around 2 m tall. Agastache nepetoides grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H4. Suggested uses include borders, gravel gardens and containers. It is native to Alabama, Arkansas, Connecticut, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts and Minnesota.
About
Agastache nepetoides, commonly known as yellow giant hyssop, is a perennial flowering plant native to the central and eastern United States and Canada. It is a member of the Lamiaceae (mint) family.
Wikipedia contributors, CC BY-SA 4.0 — Agastache nepetoides
About the genus
Agastache is a genus of aromatic flowering herbaceous perennial plants in the family Lamiaceae. It contains 22 species, mainly native to North America, one species native to eastern Asia. The common names of the species are a variety of fairly ambiguous and confusing "hyssops" and "mints"; as a whole the genus is known as giant hyssops or hummingbird mints.
Wikipedia contributors, "Agastache", CC BY-SA 4.0 — Agastache
Growing conditions
Best soil and position for Agastache
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist, Well Drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
Agastache nepetoides size, habit and characteristics
- Plant type
- perennial
- Habit
- Upright, Clump-forming
- Foliage
- Green, Aromatic
- Height
- 2 m
- Suggested uses
- Borders, Gravel gardens, Containers
- Native to
- Alabama, Arkansas, Connecticut, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Minnesota
- Fragrance
- Mildly aromatic leaves with a subtle minty scent.
Care notes
Pruning and caring for Agastache nepetoides
- Cultivation
- Prefers moist, well-drained soils in full sun to partial shade; tolerant of a range of soil types including chalk, clay, loam, and sand; benefits from sheltered exposure.
- Pruning
- Cut back in late winter or early spring to encourage fresh growth; remove spent flower stems to promote prolonged blooming.
- Propagation
- Seed, Division
- Pest resistance
- Resistant
- Disease resistance
- Resistant
Frequently asked questions
How do I grow Agastache nepetoides?
Prefers moist, well-drained soils in full sun to partial shade; tolerant of a range of soil types including chalk, clay, loam, and sand; benefits from sheltered exposure.
Where is the best place to plant Agastache nepetoides?
Agastache nepetoides prefers full sun. It suits sheltered positions.
What soil does Agastache nepetoides need?
Agastache nepetoides is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist to well drained.
How do I prune Agastache nepetoides?
Cut back in late winter or early spring to encourage fresh growth; remove spent flower stems to promote prolonged blooming.
How big does Agastache nepetoides grow?
Agastache nepetoides reaches a height of 2 m.
Is Agastache nepetoides hardy in the UK?
Agastache nepetoides has an RHS hardiness rating of H4, meaning it is hardy through an average UK winter, tolerating -10 to -5°C.
How do I propagate Agastache nepetoides?
Seed, Division.
More in the Agastache genus
- Agastache 'Black Adder'

- Agastache 'Firebird'

- Agastache 'Tangerine Dreams'Hummingbird Mint
- Agastache breviflora