Indigo, Japanese (Persicaria tinctoria) packet of 20 seeds
Family: Buckwheat (Polygonaceae)
Annual, 150 days to maturity
(Dyer’s Knotweed, Ko-Joh-Ko) Frost-tender annual to 5 feet tall, a much-branched plant with pointed leaves and white flowers, native to Eastern Europe and Asia, including especially Japan and Korea. Traditional use: Fresh and Dried leaves used in treating infections, as a disinfectant, also as a treatment for canker sores and seafood poisoning. Source of indicin, which by way of dyemaking (hydrolysis and acidification) yield 4-5% plant weight of pure indigo dye. This variety is the preferred type (white-flowered) for dyemaking. Seed is fresh and refrigerated and should be planted as soon as possible after receipt. Sow 1/4 inch deep in rich soil, tamp securely, keep evenly moist and maintain at 70 to 75 degrees F for best germination. The basic horticultural technique for growing these in the temperate zone is to sow the seed in March, transplant seedlings to field in May, first harvest July, second harvest August.
20 seeds per packet, open-pollinated, untreated, not genetically modified