Ragweed - Ambrosia artemisiifolia
Medium to tall plant, not aromatic. Stems branched and angled, often reddening and becoming somewhat woody below. Leaves mostly opposite, greyish below usually pinnately lobed with lanceolate divisions. Male Flowerheads greenish tallow 3 to 5 mm in slender spikes. Female flowers inconspicuous below, at the base of the upper leaves. Flower bracts with spiny teeth.
August to October
Not common in Britain.
Uncommonn in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in only 2 of the 617 tetrads.
Leicestershire & Rutland Map
Enter a town or village to see local records