About
Agastache rugosa 'Liquorice Blue' is a robust, upright perennial that can reach heights of up to 1.2 meters. It features aromatic, dark green leaves that are oval to lance-shaped. Throughout summer and into autumn, this plant produces elongated whorls of tubular, two-lipped flowers in a purple-blue hue, which are highly appealing to pollinators.
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, East-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Wildlife gardens, Patio and container plants
- Fragrance
- Foliage
Care notes
- Cultivation
- Grow in well-drained soil preferably in full sun with shelter
- Pruning
- Deadhead throught the season to encourage more flowers
- Propagation
- Propagate by seed or by division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to powdery mildews