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Bulbs

Cardiocrinum cordatum var. glehnii

A perennial that grows from a bulb to 2m in height, with dark green heart-shaped leaves to 30cm across. In summer up to 20 huge fragrant, trumpet-shaped creamy-white flowers marked with purple are borne. It varies from C. cordatum by being taller, with more flowers.

Synonyms

Cardiocrinum glehnii
Lilium cordatum var. glehni

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Ultimate height

1.5–2.5 metres

Time to ultimate height

5–10 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Partial shade

Aspect

East–facing or North–facing or South–facing or West–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)

Botanical details

Family: Liliaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Columnar upright
Genus: Cardiocrinum are large bulbous perennials with heart-shaped leaves and trumpet-shaped flowers resembling lilies, folowed by erect oblong seed capsules. Monocarpic, the bulbs dying after flowering
Name status: Correct
Plant range: Japan

How to grow

Cultivation

Grow in moist but well-drained, deep, humus-rich, fertile soil. Intolerant of waterlogging and may need some protection from frosts in colder areas. Mulch and feed regularly. Intolerant of hot or dry sites. Dried seed heads can be used in flower arrangements. This plant is monocarpic, so the rosette of leaves that produces the flower stem dies after flowering. Many offsets form, from which flowers will come in subsequent years

Propagation

Propagate by seed, sowing in deep pans with bottom heat, or from offsets after flowering. May take up to 7 years to flower from seed; offsets may take 4-5 years to flower

Suggested planting locations and garden types

Cottage and informal garden
Flower borders and beds
Wall side borders

Pruning

Cut out flowered stem to the base

Pests

May be susceptible to damage by slugs

Diseases

May be susceptible to a virus

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