Tag Archives: Barm

Water Arum(Calla palustris)

Botanical Name : Calla palustris
Family : Araceae
Subfamily: Calloideae
Genus :               Calla
Kingdom: Plantae
Order: Alismatales
Species: C. palustris

Habitat :  Forest swamps, moorland marshes, by ponds and streams.
.Pond; Bog Garden;

It is a rhizomatous herbaceous perennial plant growing in bogs and ponds. The leaves are rounded to heart-shaped, 6–12 cm long on a 10–20 cm petiole, and 4–12 cm broad. The greenish-yellow inflorescence is produced on a spadix about 4–6 cm long, enclosed in a white spathe. The fruit is a cluster of red berries, each berry containing several seeds.

It is hardy to zone 4. It is in flower from June to July, and the seeds ripen from August to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Flies.
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers acid and neutral soils and can grow in very acid soil. It cannot grow in the shade. It requires wet soil and can grow in water.

Cultivation details
Requires a wet lime-free humus rich soil by water or in shallow, still or slowly flowing water in full sun[200]. When grown on the pond margins it creeps in and out of the water[1]. Succeeds in water up to 25cm deep[188].

Seed – best sown as soon as it is ripe in late summer in a cold frame in pots standing in about 3cm of water[200]. Sow stored seed as early as possible in the year in a greenhouse. The germination rate of stored seed is often poor. When large enough to handle, prick the seedlings out into individual pots and grow them on in trays of water in the greenhouse for at least their first winter, planting them out into their permanent positions in late spring or early summer, after the last expected frosts. Division in spring[200]. Very easy, it is possible to divide this plant at almost any time in the growing season. Any part of the stem, if placed in water or a pot of very wet soil, will quickly root away to form a new plant. Stem cuttings in summer, rooted in wet mud.

Edible Uses
Edible Parts: Fruit; Root; Seed.

Rhizome – cooked. It is usually prepared by drying the root, grinding it into a powder and then thoroughly cooking it to ensure that any acrimonious principle is completely destroyed. The resulting powder is rich in starch and can be used as a flour for making bread etc, especially in conjunction with cereal flours[1, 2, 55, 100, 183]. It is said to be very tasty[65]. Fruit (does this include the seed?) – it should be dried and then thoroughly cooked[172]. The dried fruit and rootstalk can be ground into an unpalatable but nutritious powder[172]. The seed is dried, cooked and ground into a powder.

Medicinal Actions &  Uses
Antirheumatic; Poultice.

Antirheumatic. Used in the treatment of colds and flu. A tea made from the dried root has been used in the treatment of flu, shortness of breath, bleeding and as a poultice on swellings and snakebites. The aerial stems have been used in the treatment of sore legs.
Known Hazards:The plant is very poisonous when fresh due to its high oxalic acid content, but the rhizome, like that of Caladium, Colocasia and Arum, is edible after drying, grinding, leaching and boiling.

Disclaimer:The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.



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