In the French Revolutionary Calendar, today was Cardère, Day of the Teasel. 10 facts about teasels.
The teasel plant belongs to the genus Dipsacus. This name comes from the Greek word for thirst, because the leaves which merge at the stem resemble a cup.
The word teasel comes from an old use of the plant, which was raising the nap on woollen cloth, also known as teasing, which produces teased wool.
Because of this, the coat of arms of the Clothworkers' Company granted in 1530 includes a golden teasel head.
The first scientific record of a teasel in the British Isles was in 1538. There are about 15 different species of teasel plants.
The plants have distinctive Purple flowers. It’s the dead flower heads are often used in flower arrangements, or by the National Trust in some of their properties to prevent people from sitting on antique and fragile furniture. As a volunteer at one such property, I once witnessed American tourists so fascinated by this that they took loads of photographs of the teasels!
Francis Darwin, son of Charles, hypothesised that teasels were actually carnivorous plants, trapping insects in the aforementioned cup-like arrangement of leaves in order to digest them. In 2011 scientists tested this theory by placing dead maggots in the “cups”. The conclusion was that the biomass of the plants was not affected but it did cause a 30 % increase in seeds.
The teasel plant is biennial, which means it lives for two years, producing flowers in its second year, just before it dies.
The juice of the root cures wounds, cankers and fistulas, and removes warts, whilst the juice of the leaves, dropped in the ears, kills the worms in them. Distilled water from the leaves preserves the beauty of women. So said Culpepper in 1653.
In parts of Europe, the plant was associated with the devil and believed to be magical. The spiny stems of the plant were thought to ward off evil spirits and protect crops from damage. Some people believed they brought good luck and prosperity and so used them in ceremonies such as weddings. They came in handy at funerals, too, as teasels were believed to help the souls of the dead on their journey to the afterlife.
The seeds are an important part of the winter diet of birds like the European Goldfinch. You’ll often find them in nature reserves for this reason.

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