Agastache 'Summer Sunset'PBR
giant hyssop 'Summer Sunset'
A compact perennial to around 50cm tall with clumps of erect, branched stems bearing aromatic, grey-green leaves and spikes of tubular, pink-flushed orange flowers arranged in whorls from summer into autumn
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Grey Silver | |||
|---|---|---|---|---|
| Summer | Orange Pink | Green Grey Silver | ||
| Autumn | Orange Pink | Green Grey Silver | ||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
ShelteredDrought resistance
Yes Hardiness
H3Botanical details
- Family
- Lamiaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Agastache are herbaceous perennials with simple, aromatic leaves and small 2-lipped tubular flowers in whorls forming dense spikes, in summer and autumn; some are rather tender but can be grown as annual bedding
- Name status
Accepted
How to grow
Cultivation
Grows best in well-drained, fertile soils in full sun
Propagation
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Flower borders and beds
- Wall side borders
Pruning
No pruning required but deadheading may prolong flowering
Pests
Generally pest-free
Diseases
May be susceptible to powdery mildews
Get involved
The RHS is the UK’s gardening charity, helping people and plants to grow - nurturing a healthier, happier world, one person and one plant at a time.
