They have a prickly stem and tiny, lilac flowers growing around a spiky, thistle-like head. They bloom all summer. They were introduced in the 1700's to become an aggressive invasive.
Flower Type: Tiny flowers clustered in a spiky, thistle-like head
Flower Color: Light purple
Leaf Arrangement: Opposite
Plant Type: Wildflower (Tall 2-6 feet)
Leaf Type: Lance-shaped, toothed and fused around stem
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Amsel, Sheri. "Teasel (Common)" Exploring Nature Educational Resource ©2005-2019. February 21, 2019
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