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Herbaceous Perennial

Penstemon 'Pensham Plum Jerkum' (Pensham Series)
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penstemon 'Pensham Plum Jerkum'

'Pensham Plum Jerkum' is a bushy, semi-evergreen perennial to 70cm in height with lance-shaped, green leaves. Upright racemes of small, tubular, plum-purple flowers, with white mottled throats, are borne from early summer to mid-autumn

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Size
Ultimate height
0.5–1 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 Green
Summer Purple Green
Autumn Purple Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Plantaginaceae
Native to the UK
No
Foliage
Semi evergreen
Habit
Bushy
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

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
  • Cottage and informal garden
  • Patio and container plants
  • City and courtyard gardens
  • Wildlife gardens
  • Low Maintenance
  • Flower borders and beds
  • Underplanting of roses and shrubs
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

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