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Herbaceous Perennial

Penstemon procerus 'Roy Davidson'
  • RHS AGM
  • RHS Plants for pollinators

penstemon 'Roy Davidson'

A mat-forming perennial to 10cm in height, with slightly glossy, bright green leaves and short stems bearing white-lipped, tubular pink flowers

Synonyms
Penstemon 'Roy Davidson'
Penstemon procerus var. tolmiei pink

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Size
Ultimate height
Up to 10cm
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 Green
Summer Pink White Green
Autumn Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H5
Botanical details
Family
Plantaginaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Matforming
Genus

Penstemon may be deciduous or evergreen perennials or subshrubs, with simple, narrow leaves and racemes or panicles of bell-shaped or funnel-shaped flowers in summer and early autumn

Name status

Accepted

How to grow

Cultivation

Grow in fertile, well-drained soil in full sun or partial shade. In cold areas, protect plant overwinter with a dry winter mulch. See penstemon cultivation for further advice

Propagation

Propagate by softwood cuttings in early summer or semi-hardwood cuttings in midsummer. Propagate by division in spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Coastal
  • Gravel garden
  • Wildlife gardens
  • Flower borders and beds
  • Wall side borders
Pruning

Deadhead after flowering to maintain vigour, then cut back to base in winter

Pests

May be susceptible to slugs, snails and chrysanthemum eelworms

Diseases

May be subject to a downy mildew

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