Connecticut Plants
Water Horsetail (Swamp Horsetail)
Equisetum fluviatile L.
  • Synonyms: Equisetum limosum L.
  • Family: horsetail (Equisetaceae)
  • Habitat: marshes, ditches, ponds, and slow-moving streams
  • Height: 15 to 45 inches
  • Location of spores: in cones at the top of the green stems
  • Persistence: deciduous
  • Origin: native

Water horsetail stems may be unbranched (as in this photo) or branched. Photographed in Newfoundland, Canada in mid-July.


Cones of water horsetail.