Canada's Plant Hardiness Site

Ambrosia psilostachya

perennial ragweed, western ragweed, naked-spike ambrosia, Cuman ragweed

Detailed description(s) of the plant's characteristics.
(sites may be external)

• biology.burke.washington.edu
• www.sbs.utexas.edu
• www.illinoiswildflowers.info
• www.efloras.org
• www.npwrc.usgs.gov