Twolobe Clarkia
Clarkia biloba
Last reviewed: July 2026
Twolobe Clarkia (Clarkia biloba) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org (opens in new tab), 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, 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.
Common questions
- How much sun does Twolobe Clarkia need?
- Twolobe Clarkia grows best in full sun conditions.
- When does Twolobe Clarkia bloom?
- Twolobe Clarkia blooms in May, June, and July.
- Where is Twolobe Clarkia native?
- Twolobe Clarkia (Clarkia biloba) is native to CA, per the USDA PLANTS Database and regional native plant society lists.
- Is Twolobe Clarkia toxic to dogs?
- Twolobe Clarkia is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
- Is Twolobe Clarkia toxic to cats?
- Twolobe Clarkia is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
- What pollinators does Twolobe Clarkia attract?
- Twolobe Clarkia draws bees and butterflies.
- Is Twolobe Clarkia HOA-friendly?
- Twolobe Clarkia is generally an HOA-friendly choice in the right placement, with moderate 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.
Ready to grow Twolobe Clarkia? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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