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California Loosestrife

Lythrum californicum

Last reviewed: June 2026

California Loosestrife (Lythrum californicum)
Photo: (c) Stan Shebs, some rights reserved (CC BY-SA)

Light

full sun

Water

medium

Size

12"–60" H × 6"–12" W

Bloom

Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov

Native to

AZ, CA, KS, NM and 4 more states

Pollinators

butterflies, bees, moths, nectar insects

California Loosestrife is a tall, slender perennial wildflower that produces spikes of small pink to purple flowers from spring through fall. This native plant forms upright clumps and goes dormant in winter, making it ideal for naturalized areas and pollinator gardens.

In an HOA neighborhood

California Loosestrife is an HOA-friendly choice. Maintenance level: low. Tidiness: 2 out of 5.

Works well in: mid zone, backyard only.

  • May flop without support
  • Best in less formal zones

Wildlife value

Excellent pollinator plant that attracts butterflies, bees, moths, and other nectar-seeking insects with its long blooming season. The extended flowering period from March through November provides consistent nectar sources when many other plants are not blooming.

Common questions

How much sun does California Loosestrife need?
California Loosestrife grows best in full sun conditions.
When does California Loosestrife bloom?
California Loosestrife blooms in March, April, May, June, July, August, September, October, and November.
Where is California Loosestrife native?
California Loosestrife (Lythrum californicum) is native to AZ, CA, KS, NM and 4 more states, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does California Loosestrife attract?
California Loosestrife draws butterflies, bees, moths, and nectar insects.
Is California Loosestrife HOA-friendly?
California Loosestrife is generally an HOA-friendly choice in the right placement, with low maintenance.

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