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|The fresh root is anodyne, astringent and demulcent. The pulverized dried rhizomes have been used to stop bleedings. A tea made from the roots is used in the treatment of dysentery, diarrhoea etc. A poultice made from the roots is used in the treatment of swellings, boils, tumours, inflamed skin etc.
|Sow in a greenhouse in pots submerged under 25mm of water. Prick out into individual pots as soon as the first true leaf appears and grow them on in water in a greenhouse for at least two years before planting them out in late spring. The seed is collected by wrapping the developing seed head in a muslin bag to avoid the seed being lost. Harvest it 10 days after it sinks below the soil surface or as soon as it reappears. Submerge in pots in shallow water until established.
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