About
Agastache 'Serpentine' is a robust perennial that can reach heights of approximately 1.4 meters. Its fragrant, lanceolate leaves feature serrated margins. From mid-summer to early autumn, this plant produces dense spikes adorned with tubular violet-blue flowers.
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
- Moist but well-drained, Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Bushy, Columnar upright
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Gravel garden, Wildlife gardens
- Fragrance
- Foliage
Care notes
- Cultivation
- Thrives in well-drained, fertile soil in full sun; some drought tolerance once established. Excellent drainage is especially important during the winter months
- Pruning
- Remove spent flowering spikes as they fade
- Propagation
- Propagate by division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to powdery mildews