Polygonatum verticillatum 'Rubrum'

RHS Plant Profile

whorled Solomon's Seal 'Rubrum'

Synonyms

Polygonatum rubrum
Polygonatum verticillatum rubrum

Herbaceous Perennial

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An upright, rhizomatous perennial with narrow, stalkless leaves arranged in whorls up the stem. Small, bell-shaped, dusky pink flowers are produced, hanging below the leaves, from late spring to mid-summer followed by spherical red fruit 5mm across

Position

Full shade, 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 Partial shade

Aspect: 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: Columnar upright
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 any fertile, humus-rich, moist but well-drained soil in full or partial shade

Propagation

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

Suggested planting locations and garden types

Cottage and informal garden
Low Maintenance
Flower borders and beds
Underplanting of roses and shrubs

Pruning

Cut back to the base in late autumn

Pests

May be susceptible to slugs and solomon's seal sawfly

Diseases

Generally disease-free