Hylotelephium telephium (Atropurpureum Group) 'Dark Knight'

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  RHS Plants for Pollinators plants

  This plant will provide nectar and pollen for bees and the many other types of pollinating insects.

  It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.

  • Garden Plants
  • Wildflowers
  • Plants of the World

Cultivation

Grow in moderately fertile, well-drained, neutral to slightly alkaline soil in full sun. See hylotelephium cultivation for further advice

Propagation

Propagate by division in spring, or by softwood cuttings of non-flowering shoots in early summer

Suggested planting locations and garden types

• City and courtyard gardens
• Cottage and informal garden
• Gravel garden
• Wildlife gardens
• Flower borders and beds

Pruning

For bushy, compact plants, cut back the new stems by half in late May, this method is called the Chelsea Chop. Or cut back after flowering, and during border tidy ups in late winter before new growth emerges; seedheads can be left to overwinter

Pests

May be susceptible to slugs, snails and vine weevil

Diseases

May be susceptible to fungal and bacterial crown and root rot on wet soils, or powdery mildews on very dry soils