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Polygonatum × hybridum AGM

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© RHS 1986

Characteristics

Plant type

Herbaceous Perennial

Habit

Spreading / Branched

Toxicity

All parts may cause severe discomfort if ingested

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

Cream and White in Spring

Foliage

Green in Autumn, Spring and Summer

Fruit

Black in Autumn and Summer

Size

Ultimate height

1-1.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

garden Solomon's seal

Family

Asparagaceae


Polygonatum are rhizomatous herbaceous perennials with erect or arching stems bearing glossy, elliptic leaves and pendent, tubular or bell-shaped flowers, sometimes followed by black or red berries

P. × hybridum is a perennial with slightly arching stems to 1.2m, bearing ovate leaves and small axillary clusters of nodding, tubular creamy-white flowers tipped with green, appearing in late spring, and followed by black berries

Other common names

  • Solomon's seal

Synonym(s)

  • Polygonatum multiflorum misapplied

How to grow

Sunlight

  • Full sun
  • Part shade
  • Full shade

Aspect

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

Cultivation

Grow in any fertile, humus-rich, moist but well-drained soil in full sun, partial shade or shade

Soil

  • Moist but well-drained
  • Acid, Alkaline or Neutral
  • Clay, Loam, Chalk or Sand

Propagation

Propagate by division in spring taking care not to damage young brittle shoots

Suggested planting locations and garden types

Flower borders and beds, Cut Flowers or Underplanting of Roses and Shrubs


How to care

Pruning

Cut back to the base in late autumn

Pests

May be attacked by slugs and sawflies

Diseases

Generally disease free