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Thimbleweed Seeds Dispersing

11-29-13 thimbleweed 033Although it has a beautiful white flower, Thimbleweed, Anemone virginiana, is not as noticeable in the summer as it is when its seeds mature in the fall. Looking like a small ball of cotton, its thimble-shaped seedhead consists of a cone covered with tiny dark hooks that white, fluffy seeds cling to and cover until the wind carries them away from the parent plant. The seedhead of this member of the Buttercup family looks very much like that of its close relative, Long-head Thimbleweed, Anemone cylindrica, except A. cylindrica’s seedhead is slightly longer. As impressive as these eastern species are, there’s a species of Thimbleweed out West whose seedhead is so big the plant is referred to as “Mouse on a Stick.” In the summer, plant-eating animals usually leave Thimbleweed alone because the foliage contains a blistering agent that can irritate the mouth parts and digestive tract.

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