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Najas flexilis - (Willd.)Rostk.&F.Schmidt.

Common Name Nodding waternymph
Family Najadaceae
USDA hardiness 4-8
Known Hazards None known
Habitats Shallow fresh or brackish water[17]. Lakes and rivers; from sea level to 1500 metres in America[270].
Range Nrthwestern Europe, including Britain. #eastern and western N. America.
Edibility Rating    (2 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care (info)
Fully Hardy Water Plants Semi-shade Full sun
Najas flexilis Nodding waternymph


Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester.
Najas flexilis Nodding waternymph
USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service.

 

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Summary


Physical Characteristics

 icon of manicon of flower
Najas flexilis is a ANNUAL growing to 0.3 m (1ft).
See above for USDA hardiness. It is hardy to UK zone 5. It is in flower from August to September. The species is monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and is pollinated by Water.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in saline soils.
It can grow in semi-shade (light woodland) or no shade. It can grow in water.

UK Hardiness Map US Hardiness Map

Synonyms

Habitats

 Pond;

Edible Uses

Edible Parts: Leaves
Edible Uses:

Young shoots - raw or cooked. They are eaten like watercress[46].

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.


None known

References   More on Medicinal Uses

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An important new book from PFAF. It focuses on the attributes of plants suitable for food forests, what each can contribute to a food forest ecosystem, including carbon sequestration, and the kinds of foods they yield. The book suggests that community and small-scale food forests can provide a real alternative to intensive industrialised agriculture, and help to combat the many inter-related environmental crises that threaten the very future of life on Earth.

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FOOD FOREST PLANTS

Other Uses

Fertilizer  Packing

The plant is used as packing material to protect items packed in crates etc[46, 61]. The plant can also be used as a fertilizer[46, 61].

Special Uses

References   More on Other Uses

Cultivation details

A water plant, succeeding in shallow fresh or brackish water[200]. This is one of the few genera of plants where fertilization takes place under the surface of the water[274].

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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Fahrenheit:

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The PFAF Bookshop

Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.

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Propagation

Seed - we have no information on this species but suggest sowing the seed in situ as soon as it is ripe if this is possible. Otherwise store the seed in water in a cool place and sow in situ in the spring.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

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 :

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Najas gramineaRicefield waternymphAnnual0.2 7-10  LMHSNWa10 
Najas marinaSpiny NaiadPerennial0.5 -  LMHSNWa10 

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

(Willd.)Rostk.&F.Schmidt.

Botanical References

17200270

Links / References

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

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