The Temperate Database is in the process of being updated, with new records being added and old ones being checked and brought up to date where necessary. This record has not yet been checked and updated.
Common Name: Sea Arrow Grass
Triglochin maritima is a perennial plant that can grow up to 0.60 metres tall.
It is harvested from the wild for local use as a food and source of materials.
The green leaves of plants can contain a toxic cyanogenic glycoside, it is especially present during and just after a drought and is particularly toxic to ruminants[
]. Plants growing in Britain are usually perfectly safe, this is probably due to the climate[
Europe, including Britain, from the Arctic south and east to N. Africa, W. and N. Asia. N. America.
Salt marshes and grassy places near the sea[
Succeeds in shallow water or a bog garden[
]. Possibly requires saline conditions[
The white base of the leaf stem can be eaten raw or cooked[
]. Best harvested in late spring, the white base has a pleasant mild sweet taste, somewhat like cucumber[
]. An unpleasant odour is produced whilst the plant is being cooked[
]. The green parts of the plant should not be eaten since they can contain a toxin[
]. Only the bases of leaf stems should be used, and not the bases of flowering stems[
]. See notes at top of the page.
Seed - parched and ground into a powder[
The roasted seed is a coffee substitute[
The ashes of the plant are rich in potassium and can be used in making soap[
Seed - we have no information for this species but suggest sowing the seed in a cold frame as soon as it is ripe if this is possible. Stand the pots in about 2cm of water. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer.
Division in spring[
]. Larger divisions can be planted out direct into their permanent positions. We have found that it is best to pot up smaller divisions and grow them on in light shade in a greenhouse or cold frame until they are growing away well. Plant them out in the summer or the following spring.