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 4.0Agastache 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 4.0Agastache

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

Browse all Agastache