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Tufted Loosestrife

Lysimachia thyrsiflora

Last reviewed: June 2026

Tufted Loosestrife (Lysimachia thyrsiflora)
Photo: Krzysztof Ziarnek / Wikimedia Commons (CC BY-SA 3.0)

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.

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 Tufted Loosestrife fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.