Polygonatum × hybridum 'Betberg'

RHS Plant Profile
garden Solomon's seal 'Betberg'

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garden Solomon's seal 'Betberg' RHS

Synonyms

Polygonatum multiflorum 'Betberg'

Herbaceous Perennial
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A herbaceous perennial 60-75cm high with arching, purple-brown stems, leaves which open dark purple-brown and become dark green tipped with chocolate-brown, and hanging, tubular, creamy white flowers tipped with green in late spring, sometimes followed by spherical, blue-black fruit

Position

Full shade, Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full shade Full sun Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asparagaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
Harmful if eaten. Wear gloves and and other protective equipment when handling TOXIC to pets if eaten (dogs) - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus
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
Name Status
Accepted

How to Grow

Cultivation

Grow in fertile, humus-rich, moist but well-drained soil in sun or shade: Polygonatum usually thrive best in partial shade, but the brown colouring will be retained better in sunnier positions

Propagation

Propagate by division of the rhizomes when growth begins in spring, taking care to avoid damaging any young, brittle shoots

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Low Maintenance
  • Banks and slopes
  • Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to slugs and solomon's seal sawfly

Diseases

Generally disease-free