Tufted Loosestrife
Lysimachia thyrsiflora
Last reviewed: July 2026
The USDA PLANTS Database (opens in new tab) does not flag Tufted Loosestrife as toxic to livestock.
Light
part shade
Water
high
Size
12"–24" H × 12"–18" W
Bloom
May, Jun, Jul, Aug
Native to
CA, CO, CT, IA and 27 more states
Pollinators
bees, flies
Tufted loosestrife is a native wetland perennial that produces clusters of small yellow flowers on upright stems. This plant thrives in consistently moist to wet soils and partial shade conditions. It goes dormant in winter, dying back to the ground before re-emerging in spring.
In an HOA neighborhood
Tufted Loosestrife 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
- Can look weedy and unkempt when dormant
- May spread aggressively in ideal conditions
Wildlife value
The abundant yellow flowers provide nectar for various bees and flies during the long summer blooming period. This native plant supports local pollinator populations with its reliable seasonal flower display.
Common questions
- How much sun does Tufted Loosestrife need?
- Tufted Loosestrife grows best in part shade conditions.
- When does Tufted Loosestrife bloom?
- Tufted Loosestrife blooms in May, June, July, and August.
- Where is Tufted Loosestrife native?
- Tufted Loosestrife (Lysimachia thyrsiflora) is native to CA, CO, CT, IA and 27 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Tufted Loosestrife toxic to livestock?
- The USDA PLANTS Database does not flag Tufted Loosestrife as toxic to livestock.
- What pollinators does Tufted Loosestrife attract?
- Tufted Loosestrife draws bees and flies.
- Is Tufted Loosestrife HOA-friendly?
- Tufted Loosestrife 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 Tufted Loosestrife? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz