Dahlia Happy Single Flame ('HS Flame'PBR) (Happy Single Series) (Sin)

RHS Plant Profile
dahlia [Happy Single Flame]

Other common names

dahlia 'HS Flame'

Synonyms

Dahlia 'HS Flame'PBR
Dahlia 'Dark Leaved Flame'

Award of Garden MeritPlants for pollinators
Herbaceous Perennial

Has an upright to spreading habit, with very dark foliage and abundant flowers held well above, to 80cm. Flowers are fiery red with yellow petal bases and hold their colour well and have a central dark red disc with bright yellow anthers

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

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

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
West–facing or South–facing
Exposure
Sheltered
Hardiness
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy, Clump forming
Genus
Dahlia are tuberous rooted perennials with pinnately divided leaves and showy flowerheads, double in many cultivars, in summer and autumn
Name Status
Trade
Horticultural Group
Single-flowered dahlias have flowerheads usually less than 10cm across, with one or two rows of spreading ray florets, surrounding a central boss of small tubular disc florets which are valuable for bees and butterflies

How to Grow

Cultivation

Grow in fertile, humus-rich, well-drained soil, enriched with organic matter, in full sun. Pinch out growing tips to encourage bushy plants and stake - see staking perennials. Water if needed in dry periods. Lift and store tubers in autumn to replant, or use as a source of cuttings, in spring. See dahlia cultivation and our video How to plant dahlia tubers and care tips

Propagation

Propagate by softwood cuttings taken in spring from shoots from stored tubers, or divide the tubers ensuring each division has a viable bud

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • City and courtyard gardens
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds
  • Bedding

Pruning

Deadhead to prolong flowering. Cut back to near ground level in the autumn, before lifting and storing for the winter

Pests

May be susceptible to aphids, capsid bug, earwigs, caterpillars and glasshouse red spider mite

Diseases

May be susceptible to a virus; tubers may rot in store