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Najas graminea -

Range:S. Europe to E. Asia. Naturalized in Britain.
Najas graminea () is a Annual. It has a hardness rating of 8.
The flowers from this plant are monoecious (both sexes are found on the plant but each flower is either male or female) and they are pollinated by Water

Soil Information

Najas graminea will grow in light (sandy),medium (loamy),hard (clay) soil. It is not necessary for the soil to be well drained.
The soil prefers the following PH / acid levels :
- pH of less than 6, Acidic soils
- pH between 6 and 8, Neutral soils
- pH greater than 8, Basic soils
Najas graminea prefers soils

Ideal Planting Locations

Najas graminea can grow in semi or areas with no shade.

Rice fields and ditches[50]. Found in one pond in Britain that is warmed by industrial outflow[17].

Planting places suited to this plant described below.

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].

Edible Uses*

* See disclaimer
Edible Rating: 1/5
Two reports say that the plant is edible but give no more details[105, 177]. The reports probably refer to the leaves[K].

Medicinal Uses*

* See disclaimer
Medicinal Rating: 0/5
None known


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.

Known Hazards

None known

Other Uses

None known


no recorded cultivars


Flora Europaea
Author: ?
Publisher : An immense work in 6 volumes (including the index). The standard reference flora for europe, it is very terse though and with very little extra information. Not for the casual reader.
Date of Publication : 1964

The New RHS Dictionary of Gardening. 1992.
Huxley. A.
Author: Huxley. A.
Publisher : Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
Date of Publication : 1992

DISCLAIMER: All information published on is for entertainment purposes only. Readers are encouraged to confirm the information contained here with other sources. The information is not intended to replace medical advice offered by doctors or dietary advice by dieticians. will not be liable for any direct, indirect, consequential, special, exemplary, or other damages arising therefrom.