Bristly Haircap
Polytrichum piliferum
Last reviewed: July 2026
Light
part shade
Water
medium
Size
1"–4" H × 1"–3" W
Bloom
N/A
Native to
AL, AR, CA, CO and 35 more states
Browse plants for this ecoregion
Polytrichum piliferum is a small moss that forms tiny cushions or patches in the landscape. This hardy species stays green year-round and thrives in partially shaded areas with consistent moisture.
In an HOA neighborhood
Bristly Haircap takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Moss appearance conflicts with traditional lawn expectations
- May be perceived as indicating poor lawn care
- Could spread beyond intended areas
Wildlife value
This moss provides minimal direct wildlife value as it does not produce flowers or attract pollinators. It may offer microhabitat for very small invertebrates and help retain soil moisture.
Common questions
- How much sun does Bristly Haircap need?
- Bristly Haircap grows best in part shade conditions.
- Where is Bristly Haircap native?
- Bristly Haircap (Polytrichum piliferum) is native to AL, AR, CA, CO and 35 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Bristly Haircap HOA-friendly?
- Bristly Haircap 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 Bristly Haircap? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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