Scientific NameEquisetum arvense
Other Common Names:
Synonyms (former Scientific Names):
Equisetum arvense var. boreale
Equisetum arvense var. campestre
Equisetum arvense var. alpestre
Equisetum arvense var. riparium
Cones produce thousands of minute spores from mid-April to May. The fertile stems soon wither and die, giving way to the vegetative branched stems. Of primary concern are the rhizomes, which, along with starch-filled tubers, are easily spread by cultivation, in topsoil, and in infested balled and burlapped nursery crops.
Small, scale-like and black-tipped.
Produces mainly by creeping rhizomes that bear tubers.
Flower Seed Head
Stems have cones which produce thousands of tiny spores.
Field horsetail is a common weed of landscapes, orchards, and nursery crops. It grows on many different soils but does particularly well on sandy soils, on neutral or slightly basic soils, and in areas where the water table is high and soil drainage is poor. It is also found in low meadows, pastures, small fruit crops, roadsides, woodlands, and embankments. Field horsetail is resistant to most herbicides used in agriculture.
upright and nonwoody
Thorns or Spines
Stem Cross Section
round or oval