Phlox divaricata subsp. laphamii 'Chattahoochee'
sweet william 'Chattahoochee'
'Chattachoochee' is a low-growing semi-evergreen perennial to 15cm in height, with purplish stems, lance-shaped leaves and terminal clusters of slightly fragrant, purple-eyed lavender-blue flowers 2.5cm across
Size
Ultimate height
Up to 10cmTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Purple | |||
|---|---|---|---|---|
| Summer | Green Purple | Blue Purple | ||
| Autumn | Green Purple | |||
| Winter | Green Purple |
Position
- Partial shade
Aspect
East–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H5Botanical details
- Family
- Polemoniaceae
- Native to the UK
- No
- Foliage
- Semi evergreen
- Habit
- Matforming
- Genus
Phlox may be evergreen or herbaceous, mat-forming or erect perennials or shrubs, with simple leaves and salver-shaped flowers in terminal clusters
- Name status
Accepted
How to grow
Cultivation
Grow in fertile, humus-rich, moist but well-drained soil in partial shade
Propagation
Propagate by division in autumn or spring. Propagate by basal cuttings spring or propagate by root cuttings in early autumn or winter.
Suggested planting locations and garden types
- Flower borders and beds
- Underplanting of roses and shrubs
Pruning
No pruning required
Pests
Generally pest-free, though may be susceptible to grazing by rabbits
Diseases
May be affected by powdery mildews
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.