Zostera marina - L.
Common Name Eel Grass, Seawrack
Family Zosteraceae
USDA hardiness Coming soon
Known Hazards None known
Habitats Fine gravel, sand or mud in the sea from low water spring tides down to depths of 4 metres[17]. It is rarely found in estuaries[17].
Range Europe, including Britain, from Norway south and east to the Mediterranean.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Water Plants Full sun

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Zostera marina Eel Grass, Seawrack

Zostera marina Eel Grass, Seawrack
Physical Characteristics
 icon of manicon of flower
Zostera marina is a PERENNIAL growing to 1 m (3ft 3in). It is in flower from Jun to September, and the seeds ripen from Aug to October. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Water.Suitable for: light (sandy) and medium (loamy) soils. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in saline soils.
It cannot grow in the shade. It can grow in water.


Edible Uses
Edible Parts: Leaves;  Root;  Seed.
Edible Uses:

Leaves - raw or cooked[177, 256]. The leaf bases are crisp and sweet, they were often used as a feast food by the native North American Indians[256]. Seed[177]. No more details are given. The root of the plant is chewed for its saccharine juice[2, 105]. The root is crisp and sweet, it was used as a flavouring by the native North American Indians and was also dried for winter food[256]. The raw rhizomes were often used as a feast food[256].
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.

Women's complaints.

The leaves are used in the treatment of dropsy, goitre and women's illnesses[218].


Other Uses
Compost;  Packing.

The dried leaves and stems are used as a packing material[46, 61, 66, 100]. The plant is frequently used as a manure[2].
Cultivation details
A plant of shallow sea water, it is not really suitable for normal cultivation.
Seed - best sown as soon as it is ripe. Division.
Other Names
Found In
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 NameEdibility RatingMedicinal Rating
Phyllospadix scouleriSurf Grass, Scouler's surfgrass20
Phyllospadix torreyiSea Grass, Torrey's surfgrass20


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Botanical References
Links / References
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Readers comment
Prof Di Walker, University of Western Australia   Fri Jul 14 2006
This page contains misleading and inaccurate information about Zostera marina. There are annual populations and it frequently occurs in estuaries.
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Subject : Zostera marina  

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