Phlox × arendsii 'Utopia'
phlox 'Utopia'
a herbaceous perennial, up to 1.5m high, with green, lance-shaped leaves and very large heads of highly-scented, pale lilac-pink flowers in mid and late summer
Buy this plant
Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Pink | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Polemoniaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy
- 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 moist soil in full sun or partial shade
Propagation
Propagate by division in autumn or spring, by basal cuttings in spring or by root cuttings in early autumn or winter
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Prairie planting
- Cut flowers
- Flower borders and beds
Pruning
Deadhead to prolong flowering then cut down to the base in late autumn
Pests
May be susceptible to stem eelworm
Diseases
May be affected by powdery mildews, grey moulds, and leafy gall
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.