Adder's-tongue
Ophioglossum vulgatum
Last reviewed: June 2026
Light
part shade
Water
medium
Size
4"–12" H × 2"–6" W
Bloom
May, Jun, Jul
Native to
CT
Browse plants for this ecoregion
Adder's-tongue is a small, unusual native fern with a single leaf and distinctive spore-bearing spike. This uncommon woodland species grows slowly in moist, shaded areas and often goes dormant by midsummer. It's more of a botanical curiosity than a typical landscape plant.
In an HOA neighborhood
Adder's-tongue 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.
- Disappears completely when dormant
- Too small and inconspicuous for most landscaping
- Can look like weeds or be mistaken for dying plants
Wildlife value
This fern provides minimal direct wildlife value as it doesn't flower or produce nectar for pollinators. It may offer some habitat for small soil invertebrates in woodland settings.
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 Adder's-tongue fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.