The Bighead Knapweed is a perennial herb that is native to Eastern Europe. It was introduced to North America and the UK in the early 19th century and is still widely used in the horticultural trade as cut/dried flowers, seeds, and plants.
The Bighead Knapweed is grass with thread-like yellow, spherical flower heads 1 to 3 inches in diameter and grow individually on the stems. The plant grows on solid roots and can reach a height of one and a half meters.
