Heuchera 'Happy Flames'

RHS Plant Profile
alum root 'Happy Flames'

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Herbaceous Perennial
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A compact, clump-forming, semi-evergreen perennial bearing rounded, lobed, yellow-green leaves with orange-red veins in spring, turning orange with yellow margins in autumn. Slender, upright stems bear panicles of small, bell-shaped, white flowers from late spring into summer.

Position

Partial shade

Soil Types

Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

Partial shade
Aspect
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)
H6
Drought Resistance
Yes

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
Heuchera are more or less evergreen, clump-forming perennials with attractive, rounded, shallowly palmately lobed leaves and racemes or panicles of small, tubular flowers, often with colourful calyces
Name Status
Accepted

How to Grow

Cultivation

Grow in a fertile, neutral or slightly acid soil in light or partial shade, and ensure good drainage, especially in heavy soils. The woody rootstock tends to lift out of the ground over time, so mulch annually to retain moisture. Divide and replant every 3-4 years to maintain vigour

Propagation

Propagate by division in autumn

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Low Maintenance
  • Banks and slopes
  • Flower borders and beds
  • Garden edging
  • Underplanting of roses and shrubs

Pruning

Remove faded flower spikes

Pests

May be susceptible to vine weevil

Diseases

May be susceptible to heuchera rust