Phlox paniculata 'Blue Evening'![RHS Plants for pollinators](/assets/styles/images/icons/RHS_Bee_YELLOW-REGISTERED.png)
![RHS Plants for pollinators](/assets/styles/images/icons/RHS_Bee_YELLOW-REGISTERED.png)
perennial phlox 'Blue Evening'
An upright herbaceous perennial growing to about 80cm with narrow dark green leaves, sometimes bronzy, on black stems. The fragrant flowers, produced from mid-summer to early autumn, are lilac, appearing bluer in evening light
Size
Ultimate height
0.5–1 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 | Black | Green | ||
---|---|---|---|---|
Summer | Black | Purple | Green | |
Autumn | Black | Purple | 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 the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- 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, moist soil in full sun or partial shade
Propagation
Propagate by division in autumn or spring. Propagate by basal cuttings in spring or propagate by root cuttings in early autumn or winter
Suggested planting locations and garden types
- Cottage and informal garden
- City and courtyard gardens
- Prairie planting
- Wildlife gardens
- Cut flowers
- Flower borders and beds
- Wall side borders
Pruning
Deadhead to prolong flowering then cut down to the base in late autumn
Pests
May be susceptible to stem eelworm
Diseases
May be susceptible to powdery mildews, and a 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.