Twolobe Clarkia
Clarkia biloba
Last reviewed: June 2026
Twolobe Clarkia (Clarkia biloba) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org, last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
12"–24" H × 6"–12" W
Bloom
May, Jun, Jul
Native to
CA
Pollinators
bees, butterflies
Browse plants for this ecoregion
Clarkia biloba, or Two-lobed Clarkia, is a vibrant native annual wildflower growing 1-2 feet tall. It produces showy pink to lavender blooms with distinctive two-lobed petals during late spring and early summer. This drought-tolerant plant works well in borders, meadow gardens, or naturalized areas.
In an HOA neighborhood
Twolobe Clarkia is an HOA-friendly choice in the right placement. Maintenance level: moderate. Tidiness: 3 out of 5.
Works well in: mid zone, backyard only, foundation.
- Annual nature means seasonal dieback
- Can look untidy after blooming
- May self-seed and appear somewhat random if not managed
Wildlife value
Two-lobed Clarkia provides valuable nectar for native bees and butterflies during its bloom period. It's particularly important for specialist native bees that rely on Clarkia species.
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 Twolobe Clarkia fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.