Mulleinis a biennial that produces a large, thick rosette of fuzzy leaves thefirst year and a single, stout, erect stem, 2 to 6 feet tall, the secondyear. The leaves are alternate, overlapping one another, light green,and densely woolly. Flowers are arranged in long terminal spikes and aresulfur yellow. Flowering and seed production occurs from June toAugust.
This weed was introduced from Europe, but is a native of Asia andis common throughout the temperate areas of North America. It is foundalong river bottoms, pastures, meadows, fence rows and disturbed areas.It is especially prevalent on gravelly soils.