× Heucherella 'Gunsmoke'

RHS Plant Profile

heucherella 'Gunsmoke'

RHS

Herbaceous Perennial

Buy this from Plant Nurseries
3 Suppliers

A clump-forming perennial, purple-red palmate leaves in spring turning silver with dark veins in late summer. Panicles of white flowers

Position

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 or Well–drained
pH: Acid or Neutral

Position

Full sun Partial shade

Aspect: South–facing or North–facing or West–facing or East–facing
Exposure: Exposed or 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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Saxifragaceae
Native to GB/Ireland: No
Foliage: Semi evergreen
Habit: Clump forming
Genus: × Heucherella are hybrids between Heuchera and Tiarella, and are evergreen, clump-forming perennials with ovate or rounded leaves and open panicles of small bell-shaped pink or white flowers over a long period
Name Status: Accepted

How to Grow

Cultivation

Grows best in moist but well-drained soil in a semi-shaded position

Propagation

Divide in autumn

Suggested planting locations and garden types

Cottage and informal garden
City and courtyard gardens
Patio and container plants
Banks and slopes
Garden edging
Underplanting of roses and shrubs
Cut flowers
Flower borders and beds
Ground cover

Pruning

Remove faded flower spikes in autumn

Pests

May be susceptible to vine weevil, especially when grown in containers

Diseases

Generally disease-free