Common: Weakleaf Bur Ragweed
Found in California, Nevada, Arizona, Utah, Colorado, New Mexico, Texas, Oklahoma, Kansas, and Tennessee
Slender Ragweed is a perennial herb growing to heights of 1-6.5 feet. It has bristly, fuzzy, green to brown erect stems. It has gray-green, fern-like leaves. The leaves are alternate and multilobed and have blades that can be 6 inches long. The plant has male and female flower heads, which bloom June through November. Slender Ragweed generally forms in very dense stands and overtakes many other plants.