Other Common Names: absinthium, absinth sage, American wormwood, common wormwood, mugwort, wormwood, wormwood sage.
Origin: Europe, Northern Asia, Northern Africa. First reported in North America in the 1840s.
Growth Habit: Erect, perennial forb, approximately 1.5-4 ft. tall.
Leaves: 1-3 in. long, deeply dissected, covered with fine hair grey or silver in color.
Stems: Erect, covered with fine silky hairs, makes plant appear grayish. 
Flowers: Small, dull yellow flowers in panicles towards top of plant, blooms in July and August.
Roots: Large, woody taproot.
Seeds: Germinate in late summer through early fall, remain viable in the soil for up to 4 years.
Other: Emits strong medicinal odor. Toxic to horses. Little to no forage value; sheep can graze it, but cattle who graze it will taint their milk supply.

Buy certified weed-free forage or hay to ensure you are not importing the plant's seed. You can learn more about how to purchase certified weed-free forage through the Nebraska Weed Control Association's Weed Free Forage Program. 

Prevent absinth wormwood establishment on pastures and/or rangelands by maintaining well-established grasses and forbs through proper grazing and rotational grazing techniques. 

Absinth wormwood can be treated with herbicides containing clopyralid, dicamba, Picloram, glyphosate, and 2,4-D. Ensure you select the correct product that is labeled for the site you plan to use it on. Read, understand, and follow all label instructions when using a pesticide.