Marsh Vetchling
Lathyrus palustris
Last reviewed: June 2026
Light
part sun
Water
high
Size
12"–48" H × 12"–24" W
Bloom
Jun, Jul, Aug
Native to
AL, AR, CA, CO and 30 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Marsh vetchling is a climbing perennial vine that produces small purple pea-like flowers from June through August. This native wetland plant thrives in moist soils and partial sun, spreading moderately through underground rhizomes. It requires consistent moisture and may struggle in typical residential settings without supplemental watering.
In an HOA neighborhood
Marsh Vetchling 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.
- Vine growth habit appears unstructured and wild
- Requires specialized wetland conditions difficult to maintain
- May look sparse or straggly without proper support
Wildlife value
The flowers attract native bees and beetles during the summer blooming period. As a member of the pea family, it also helps fix nitrogen in the soil.
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 Marsh Vetchling fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.