Great Horsetail
Equisetum telmateia
Last reviewed: June 2026
Light
part shade
Water
high
Size
12"–60" H × 6"–24" W
Bloom
Mar, Apr, May
Native to
ID
Browse plants for this ecoregion
Great horsetail is a primitive fern that produces tall, bamboo-like green stems with distinctive whorled branches. It thrives in consistently moist to wet soils and can form dense colonies through underground rhizomes. This ancient plant goes dormant in winter, dying back completely to the ground.
In an HOA neighborhood
Great 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.
- Extremely aggressive spreader that can become invasive
- Unusual appearance may be considered too wild or unkempt
- Dies back completely in winter leaving bare ground
Wildlife value
This species provides minimal direct wildlife value as it does not produce flowers or attract pollinators. The stems may provide some shelter for small wildlife, but it is not considered a significant contributor to pollinator gardens.
Common questions
- How much sun does Great Horsetail need?
- Great Horsetail grows best in part shade conditions.
- When does Great Horsetail bloom?
- Great Horsetail blooms in March, April, and May.
- Where is Great Horsetail native?
- Great Horsetail (Equisetum telmateia) is native to ID, per the USDA PLANTS Database and regional native plant society lists.
- Is Great Horsetail HOA-friendly?
- Great Horsetail takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
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.
Ready to grow Great Horsetail? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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