Oregon Checkerbloom
Sidalcea oregana
- Native to:
- Canada, United States
NRCS National Wetland Team, Fort Worth, TX
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Malvaceae
- Genus:
- Sidalcea
- Species:
- Sidalcea oregana
- USDA Symbol:
- SIOR
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 120 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- may,jun,jul,aug
- Bloom Colors:
- pink, white
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Zenodoxus sidalceae, West Coast Lady (Vanessa annabella)
Reported Fauna Sightings
Bees: Black-tailed bumble bee (Bombus melanopygus), Central bumble bee (Bombus centralis), Fuzzy-horned bumble bee (Bombus mixtus), Indiscriminate cuckoo bumble bee (Bombus insularis), Red-belted bumble bee (Bombus rufocinctus), Two-form bumble bee (Bombus bifarius), Yellow bumble bee (Bombus fervidus), Yellow head bumble bee (Bombus flavifrons), Yellow-faced bumble bee (Bombus vosnesenskii)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, hummingbirds
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Can resprout from rootstock following fire; often found in meadow habitats with periodic fire history.
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- good drainage preferred
- Moisture:
- consistently moist
- Notes:
- Thrives in meadows and streambanks
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–42 days
- Notes:
- Seeds benefit from cold stratification. Surface sow or lightly cover; light may aid germination.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.
Source: Claude AI