Overview
Agastache rugosa 'Alabaster' is a 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 'Alabaster' grows best in full sun, and tolerates sandy and loamy soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include borders and wildlife 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
- Neutral
- Soil moisture
- Well-drained, Moist but well-drained
- Aspect
- South-facing
- Exposure
- Full sun
- UK hardiness
- H5
Plant details
Agastache rugosa 'Alabaster' size, habit and characteristics
- Plant type
- Perennial herb
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1.0 m
- Spread
- 0.66 m
- Suggested uses
- Borders, Wildlife gardens
- Native to
- East Asia
- Fragrance
- Aromatic
Care notes
Pruning and caring for Agastache rugosa 'Alabaster'
- Propagation
- Seed, Cuttings
- Pest resistance
- Generally pest-free
- Disease resistance
- Powdery mildew
Frequently asked questions
Where is the best place to plant Agastache rugosa 'Alabaster'?
Agastache rugosa 'Alabaster' prefers full sun. It suits full sun positions.
What soil does Agastache rugosa 'Alabaster' need?
Agastache rugosa 'Alabaster' grows best in sandy and loamy soil. It prefers neutral soil. Aim for soil that stays well-drained to moist but well-drained.
How big does Agastache rugosa 'Alabaster' grow?
Agastache rugosa 'Alabaster' reaches a height of 1.0 m and a spread of 0.66 m.
Is Agastache rugosa 'Alabaster' hardy in the UK?
Agastache rugosa 'Alabaster' 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 'Alabaster'?
Seed, Cuttings.
From the Fenn Plants journal
- Notes on DaffodilsWhen to plant daffodil bulbs in the UK, how deep, how to naturalise them in grass, why daffodils stop flowering (“blindness”), and why you should never mix cut daffodils with other flowers.
- Keeping Your NerveHow to garden through a heatwave — the best time to water, why deep soaks beat daily sprinkles, caring for pots and vulnerable plants, and why you can let the lawn go brown.
- Made to LastHow to clean, store and protect garden pots and planters — the frost-proof vs frost-resistant difference, winter care for terracotta and ceramic, and how to reuse a broken pot.
More in the Agastache genus
- Agastache 'Black Adder'

- Agastache 'Firebird'

- Agastache 'Tangerine Dreams'Hummingbird Mint
- Agastache breviflora