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Alpine RockeryHerbaceous Perennial

Phlox douglasii 'Red Admiral'
  • RHS AGM

phlox 'Red Admiral'

'Red Admiral' is a compact evergreen perennial to 15cm in height, forming a mat of small, dark green, awl-shaped leaves. Flowers rich deep crimson, 1.5cm in width, 1-3 at the ends of the stems, in late spring and early summer

Synonyms
Phlox 'Red Admiral'
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Red Green
Summer Red Green
Autumn Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or East–facing

Exposure
Exposed
Hardiness
H6
Botanical details
Family
Polemoniaceae
Native to the UK
No
Foliage
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 well-drained, fertile soil in full sun or partial shade

Propagation

Propagate by taking softwood cuttings of non-flowering stems in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Rock garden
  • Gravel garden
  • Patio and container plants
  • Garden edging
Pruning

Deadhead to prolong flowering

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews and a leaf spot

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