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Nuphar japonica

Japanese pond lily

N. japonica is a bottom-rooting aquatic perennial with ovate or heart-shaped, floating leaves and 4-5cm in width, globose yellow flowers, often tinged with red, in summer

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Size
Ultimate height
Up to 10cm
Time to ultimate height
5–10 years
Ultimate spread
0.5–1 metres
Growing conditions
Clay
Loam
Sand
Moisture
Poorly–drained
pH
Acid
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Red Yellow Green
Autumn
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Nymphaeaceae
Native to the UK
No
Foliage
Deciduous
Habit
Submerged, Floating
Genus

Nuphar are deciduous submerged aquatic perennials with ovate or rounded floating leaves and solitary, globose flowers held just above the water surface

Name status

Correct

How to grow

Cultivation

Grow in water up to 2m deep in acid soil providing a free root-run. Divide frequently for optimum flower production. See pond plants for further advice

Propagation

Propagate by division

Suggested planting locations and garden types
  • Low Maintenance
Pruning

Cut back after flowering

Pests

May be susceptible to lily beetle, water lily aphid, brown china-mark moth and false leaf-mining midge

Diseases

Generally disease-free

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