Common Horsetail
Equisetum arvense
Last reviewed: June 2026
Common Horsetail (Equisetum arvense) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org, last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
medium
Size
4"–24" H × 2"–12" W
Bloom
Mar, Apr, May
Native to
AL, AR, AZ, CA and 42 more states
Browse plants for this ecoregion
Common horsetail is an ancient fern ally that produces distinctive jointed, segmented stems resembling miniature bamboo. This primitive plant spreads by underground rhizomes and produces separate fertile stems with cone-like structures in spring, followed by sterile green photosynthetic stems through summer.
In an HOA neighborhood
Common Horsetail takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Aggressive spreading habit can invade other plantings
- Unusual prehistoric appearance may seem unkempt
- Difficult to control once established
Wildlife value
Horsetails provide minimal wildlife value as they do not produce flowers for pollinators and are generally not eaten by wildlife due to their high silica content and primitive structure.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Common Horsetail fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.