Kirengeshoma palmata Koreana Group

RHS Plant Profile

yellow wax-bells Koreana Group

Synonyms

Kirengeshoma koreana

Herbaceous Perennial

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A herbaceous perennial forming a clump to 1.2m or more, with palmately lobed leaves and dark maroon stems bearing nodding, fleshy, narrowly bell-shaped creamy-yellow flowers to in open panicles. The flowers are larger than those of Kirengeshoma palmata

Position

Full shade, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.5-1 metres
Max Height: 1-1.5 metres

Growing Conditions

Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid

Position

Full shade Partial shade

Aspect: North–facing or East–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): H7

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Hydrangeaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Kirengeshoma are rhizomatous perennials with palmately lobed, maple-like leaves and branched sprays of tubular bell-shaped, pale yellow flowers
Name Status: Accepted
Plant Range: Korea

How to Grow

Cultivation

Grow in moist, lime-free soil enriched with leaf mould. Prefers partial shade but tolerates denser shade; shelter from cold winds. If there is plenty of water a site in full sun may be tolerated, but is not ideal

Propagation

Propagate by seed in pots in a cold frame as soon as seed is ripe or in spring (germination may be erratic). Propagate by division as growth begins in spring

Suggested planting locations and garden types

Cottage and informal garden
Low Maintenance
Flower borders and beds
Wall side borders

Pruning

Cut down the year's growth after flowering

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free