Plants : EquisetaceaeFerns and Flowering Plants

Equisetum arvense L.

Field Horsetail

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Equisetum arvense

Description: This is a very common plant of a wide variety of habitats, including gardens as a pernicious weed! Other situations include the dryer parts of sand-dunes, waste tips, the edges of roads and railway tracks, pathways, arable fields, hedgebanks and scrub. Shoots are of two sorts: in early spring, almost colourless, rather fleshy unbranched shoots appear which carry the cones (which produce the spores). These are followed later by the green, regularly-branched, deeply-grooved photosynthetic shoots, which persist until the following winter. All shoots are produced from a creeping underground rhizome.

Some people refer to this plant as 'mare's tail', but strictly speaking that name refers to a completely unrelated aquatic plant Hippuris vulgaris.

All names: Equisetum arvense L.

Distribution Map from NBN: Equisetum arvense at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Equisetum arvense at iNaturalist World Species Observations database.

 Hackney, P., 2026. Equisetum arvense. L.. [In] Flora of Northern Ireland.
https://habitas.org/flora/species.php?item=2022. Accessed on 2026-11-02.