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Isatis Tinctoria
In stock
Description
This famous plant makes a dividing clump of shiny leaves, above which arise masses of small yellow flowers which in turn produce sprays of unusual elongated seeds. This is the plant made famous as the source of the most important blue natural dye, used by the Celts, the ancient people of the British Isles (& Braveheart!). The leaves must be dried and then steeped and fermented in water to produce a deep blue dye that is useful for ruining your clothes, or maybe painting your face blue to frighten visitors............
Sowing Advice
Sow immediately at any time onto preferably a soil-based compost, covering with fine grit to approximately their own depth. Germination MAY be quicker if kept at 15 to 20 degrees C. but many seeds WILL NOT come up the year they are sown, needing winter chilling after sowing, and ONLY come up with natural spring germination.
Key Facts
Family:Brassicaceae
Common name:Woad
Classification:Hardy perennial
Height:60-90cm