Field horsetail Equisetum arvense L.
Equisetaceae (Horsetail family)
Perennial, spore-producing plant.
Vegetative stems are green and branch in whorls. Stems may have a bottle-brush appearance and should not exceed 2 feet in height. Stems die back to the ground in winter.
Flowers and fruit
Erect, unbranched, white to brown fruiting stalks (stems) bear terminal spore-releasing cones. Flowers are not produced.
Spores and prolific rhizomes.
Scouringrush (E. hyemale L.)
Differs by having larger evergreen stems with little or no branching. Grows only in wet areas.