Hartweg's checkerbloom
Sidalcea hartwegii
Last reviewed: August 2026
Light
full sun
Water
low
Size
8"–24" H × 8"–12" W
Bloom
Apr, May, Jun
Native to
CA
Pollinators
bees
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 431 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaAn upright annual with rounded, lobed leaves and open spikes of pink cup-shaped flowers in spring. It grows scattered through open grassland and completes its cycle before summer drought.
Wildlife value
Host plant for West Coast lady.
As a member of the mallow family it serves as a larval host for the West Coast lady butterfly, and its flowers feed native bees.
Common questions
- How much sun does Hartweg's checkerbloom need?
- Hartweg's checkerbloom grows best in full sun conditions.
- When does Hartweg's checkerbloom bloom?
- Hartweg's checkerbloom blooms in April, May, and June.
- Where is Hartweg's checkerbloom native?
- Hartweg's checkerbloom (Sidalcea hartwegii) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
- What butterflies or moths does Hartweg's checkerbloom host?
- Hartweg's checkerbloom is a larval host plant for West Coast lady.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
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