Scentless chamomile is a fibrous-rooted plant that reproduces primarily by seeds. It has various life cycles: annual, winter annual, and biennial. Plants usually grow from 6–24 inches tall. When flowering, scentless chamomile has many daisy-like flowers, which have 12 petals. These flowers are capable of producing anywhere from 10,000–200,000 seeds per plant. The leaves are finely divided and fern-like in appearance.
Scentless chamomile was most likely introduced from Europe as an ornamental plant. The seeds for this plant have very high survivability when digested by ruminants and have the ability to remain dormant in the soil for 15 years. In Teton County, this noxious weed is a very successful invader, successfully adapting to a variety of habitats. It often prefers disturbed soils and roadsides.
For advice on controlling this invader or for a free consultation of your Teton County residence, please contact Teton County Weed & Pest District at 733-8419.