Swamp Lousewort
Pedicularis lanceolata
Last reviewed: June 2026
Light
part sun
Water
high
Size
8"–24" H × 4"–12" W
Bloom
Jun, Jul, Aug
Native to
AR, CT, DE, GA and 21 more states
Pollinators
bees, butterflies
Swamp lousewort is a native perennial wildflower that produces distinctive yellow, tubular flowers from June through August. This moisture-loving plant forms compact clumps with finely divided foliage and grows 8-24 inches tall. It thrives in consistently moist to wet soils and partial sun conditions.
In an HOA neighborhood
Swamp Lousewort 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.
- Requires consistently wet soil conditions that may appear unkempt
- Wild appearance doesn't fit typical landscaping expectations
- Name contains 'lousewort' which could raise concerns
Wildlife value
The tubular flowers attract bees and butterflies during the summer blooming period. This native plant provides nectar for pollinators when many other flowers may be stressed by summer heat.
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 Swamp Lousewort fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.