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Penstemon procerus 'Roy Davidson' AGM

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© RHS 1997

Characteristics

Plant type

Herbaceous Perennial

Habit

Mat forming

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

Pink and White in Summer

Foliage

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

Up to 10 cm

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

penstemon 'Roy Davidson'

Family

Plantaginaceae


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

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

Synonym(s)

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

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • South-facing, East-facing or West-facing
  • Exposed or Sheltered

Cultivation

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

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Chalk, Loam or Sand

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/Courtyard Gardens, Cottage/Informal Garden or Flower borders and beds


How to care

Pruning

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

Pests

May be attacked by slugs, snails and chrysanthemum eelworms

Diseases

May be subject to a downy mildew