Not the plant you're looking for? Search over 300,000 plants

Spiraea japonica 'Genpei'
  • RHS Plants for pollinators

Japanese spiraea 'Genpei'

Dwarf, deciduous rounded shrub about 45cm in height and spread, with lance-shaped, sharply-toothed dark green leaves and producing a mix of deep pink and white flowers separately or in the same flowerheads on the one plant, during summer

Synonyms
Spiraea japonica 'Shirobana' misapplied
Spiraea japonica 'Shibori' misapplied
Buy this plant
Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink White Green
Autumn Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Rosaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus

Spiraea are deciduous shrubs, sometimes suckering, with simple leaves and short racemes, panicles or corymbs of small, 5-petalled white or pink flowers in spring or summer

Name status

Accepted

How to grow

Cultivation

Grow in moist but well-drained soil in full sun or light shade. Especially suitable for mixed borders, container cultivation and border edging or low hedging

Propagation

Propagate by softwood or semi-ripe cuttings in spring to late summer or hardwood cuttings in winter

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Patio and container plants
  • Wildlife gardens
  • Flower borders and beds
Pruning

Pruning group 6 for spiraea flowering on current years stems, deadhead and clip over to keep neat, after flowering.

Pests

Generally pest-free

Diseases

Generally disease-free but may be susceptible to honey fungus

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.