About
Agastache foeniculum 'Alabaster' is a vertical, clump-forming perennial that sheds its leaves in the colder months. Its fragrant green stems support slender spikes of white flowers, which bloom from summer into fall. The seedheads that remain throughout winter add structure to garden borders and serve as a food source for birds.
About the genus
Agastache consists of herbaceous perennials featuring straightforward, fragrant foliage and small tubular flowers with two lips, arranged in whorls that create compact spikes during the summer and autumn months. While some species may be somewhat tender, they can also be cultivated as annual bedding plants.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming, Columnar upright
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Gravel garden, Mediterranean climate plants
- Fragrance
- Foliage
Care notes
- Cultivation
- Grow in sharply drained, fertile soil in full sun
- Pruning
- Remove spent flowering spikes throughout season. Do not cut back in the autumn if you wish to leave the seedheads for wildlife
- Propagation
- Propagate by seed or by division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to powdery mildews