Phlox divaricata 'Blue Moon'
sweet william 'Blue Moon'
A low-growing, bushy perennial, to around 30cm high, with trailing, rooting stems and lance-shaped, glossy green leaves. Clusters of fragrant, pale lavender blue flowers are produced in mid to late spring
Buy this plant
Size
Ultimate height
0.1–0.5 metresTime 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 | Purple Blue | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter | Green |
Position
- Full shade
- Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Polemoniaceae
- Native to the UK
- No
- Foliage
- Semi evergreen
- Habit
- Bushy, Trailing
- 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
Thrives in moist but well-drained, fertile soil, in part or dappled shade. Ideal for underplanting in borders or deciduous woodland
Propagation
Propagate by root cuttings or by softwood cuttings of non-flowering stems in spring
Suggested planting locations and garden types
- Cottage and informal garden
- Wildlife gardens
- Flower borders and beds
- Ground cover
- Underplanting of roses and shrubs
Pruning
Cut back in late spring after flowering, to promote new growth
Pests
Generally pest-free, though may be susceptible to grazing by rabbits
Diseases
May be susceptible to powdery mildews and leaf spot
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.