Overview

Agastache rugosa 'Liquorice White' is a bushy, clump forming perennial herb in the genus Agastache, part of the Lamiaceae family, with deciduous foliage. It typically grows around 1.0 m tall and 0.66 m wide. Agastache rugosa 'Liquorice White' grows best in full sun, and tolerates sandy and loamy soils and any pH. Its UK hardiness is rated H5. Suggested uses include borders, herb gardens and pollinator gardens. It is native to East Asia.

About

Agastache rugosa, also known as wrinkled giant hyssop, Korean mint, purple giant hyssop, Indian mint, Chinese patchouli, or Huoxiang, is an aromatic herb in the mint family, native to East Asia.

Wikipedia contributors, CC BY-SA 4.0 — Agastache rugosa

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
Sandy, Loamy
Soil pH
Acid, Alkaline, Neutral
Soil moisture
Well-drained, Moist but well-drained
Aspect
South-facing, West-facing
Exposure
Full sun
UK hardiness
H5

Plant details

Agastache rugosa 'Liquorice White' size, habit and characteristics

Plant type
Perennial herb
Habit
Bushy, Clump forming
Foliage
Deciduous
Height
1.0 m
Spread
0.66 m
Suggested uses
Borders, herb gardens, pollinator gardens
Native to
East Asia
Fragrance
Liquorice-scented flowers and foliage

Care notes

Pruning and caring for Agastache rugosa 'Liquorice White'

Cultivation
Prefers well-drained soil, avoid waterlogging, drought tolerant once established
Pruning
Cut back after flowering to maintain shape and encourage bushiness
Propagation
Seed, cuttings
Pest resistance
Generally pest-free
Disease resistance
Powdery mildews

Frequently asked questions

How do I grow Agastache rugosa 'Liquorice White'?

Prefers well-drained soil, avoid waterlogging, drought tolerant once established.

Where is the best place to plant Agastache rugosa 'Liquorice White'?

Agastache rugosa 'Liquorice White' prefers full sun. It suits full sun positions.

What soil does Agastache rugosa 'Liquorice White' need?

Agastache rugosa 'Liquorice White' grows best in sandy and loamy soil. It is happy in soil of any pH. Aim for soil that stays well-drained to moist but well-drained.

How do I prune Agastache rugosa 'Liquorice White'?

Cut back after flowering to maintain shape and encourage bushiness.

How big does Agastache rugosa 'Liquorice White' grow?

Agastache rugosa 'Liquorice White' reaches a height of 1.0 m and a spread of 0.66 m.

Is Agastache rugosa 'Liquorice White' hardy in the UK?

Agastache rugosa 'Liquorice White' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.

How do I propagate Agastache rugosa 'Liquorice White'?

Seed, cuttings.

From the Fenn Plants journal

More in the Agastache genus

Browse all Agastache →