Agastache 'Rosie Posie'PBR
giant hyssop 'Rosie Posie'
An upright, clump-forming herbaceous perennial with aromatic, green leafy stems. Bright lavender-pink flowers appear from summer through to autumn. Deep purple calyxes which surround the flower bud remain for a longer period providing further colour interest

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Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Pink | Green | ||
| Autumn | Pink | Green | ||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H3Botanical details
- Family
- Lamiaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming, Columnar upright
- 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
Grow in sharply drained, fertile soil in full sun
Propagation
Propagate by seed or division in spring
Suggested planting locations and garden types
- City and courtyard gardens
- Gravel garden
- Mediterranean climate plants
- Banks and slopes
- Flower borders and beds
Pruning
Remove spent flowering spikes throughout season. Do not cut back in the autumn if you wish to leave the seedheads for wildlife
Pests
Generally pest-free
Diseases
May be susceptible to powdery mildews
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