Nuphar japonicum - DC.

Common Name

Family

Nymphaeaceae

USDA hardiness

5-9

Known Hazards

None known

Habitats

Ponds, lakes and shallow streams throughout Japan[58].

Range

E. Asia - Japan.

Edibility Rating

(3 of 5)

Other Uses

(0 of 5)

Weed Potential

Medicinal Rating

(1 of 5)

Care (info)


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Summary

Physical Characteristics

Nuphar japonicum is a PERENNIAL.
See above for USDA hardiness. It is hardy to UK zone 6. The species is hermaphrodite (has both male and female organs) and is pollinated by Flies, beetles.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It can grow in water.

UK Hardiness Map US Hardiness Map

Synonyms

Plant Habitats

Pond;

Edible Uses

Edible Parts: Root Seed
Edible Uses:

Root - cooked[105, 177]. Used as a famine food, when baked it tastes like sweet chestnuts[178]. The root probably needs to be steeped in water before use in order to remove a bitter flavour[K]. Seed[105, 177]. No more details are given but the seed is probably rich in starch and can be ground into a powder then used as a thickener in soups etc[K].

References More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Birthing aid Digestive Women's complaints

Digestive, women's complaints[174, 178]. Used before and after childbirth, it treats gynecopathy(menoxenia)[174].

References More on Medicinal Uses

Other Uses

None known

Special Uses

References More on Other Uses

Cultivation details

A water plant requiring a rich soil and a sunny position. It is best if grown in still water that is up to 75cm deep but it also tolerates slow moving water[200]. Succeeds in light shade[200].

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

Type a value in the Celsius field to convert the value to Fahrenheit:

Celsius Fahrenheit:

Plant Propagation

Seed - sow as soon as it is ripe in a greenhouse in pots submerged under 25mm of water. Prick out into individual pots as soon as the first true leaf appears and grow them on in water in a greenhouse for at least two years before planting them out in late spring. The seed is collected by wrapping the developing seed head in a muslin bag to avoid the seed being lost. Harvest it 10 days after it sinks below the soil surface or as soon as it reappears[200]. Division in May. Each portion must have at least one eye. Submerge in pots in shallow water until established[56].

Other Names

If available other names are mentioned here

Native Range

Coming Soon

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it's worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

IUCN Red List

Related Plants

Latin Name	Common Name	Habit	Height	Hardiness	Soil	Shade	Moisture	Edible	Medicinal	Other
Nuphar advena	Common Spatterdock, Yellow pond-lily, Varigated yellow pond-lily	Perennial	0.0	3-7	LMH	SN	Wa	3	2	0
Nuphar lutea	Yellow Water Lily, Yellow pond-lily, Rocky Mountain pond-lily, Varigated yellow pond-lily	Perennial	0.0	4-8	LMH	SN	Wa	3	2	0
Nuphar polysepala	Spatterdock, Rocky Mountain pond-lily	Perennial	1.8	4-8	LMH	SN	Wa	3	1
Nuphar pumila	Yellow pond-lily	Perennial	0.0	0-0	LMH	SN	Wa	3	1	0

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

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Expert comment

Author

DC.

Botanical References

58200

Links / References

For a list of references used on this page please go here