California Harebell
Campanula prenanthoides
Last reviewed: August 2026
Toxicity unknown
California Harebell (Campanula prenanthoides) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
medium
Size
12"–24" H × 6"–12" W
Bloom
Jun, Jul, Aug
Native to
CA, OR
Pollinators
bees, butterflies
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 437 programs across 44 states, each with a link to the provider and the date we last checked it.
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California harebell is a delicate wildflower with slender stems and small, bell-shaped blue to purple flowers that bloom throughout summer. This woodland perennial forms compact clumps and goes dormant in winter, making it ideal for naturalized shade gardens.
In an HOA neighborhood
California Harebell takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Appears weedy and unkempt when dormant
- Too informal for typical HOA standards
- May be seen as unmaintained wildflower
Wildlife value
The tubular flowers attract native bees and butterflies during its long summer bloom period. Seeds provide food for small birds in late summer and fall.
Common questions
- How much sun does California Harebell need?
- California Harebell grows best in part shade conditions.
- When does California Harebell bloom?
- California Harebell blooms in June, July, and August.
- Where is California Harebell native?
- California Harebell (Campanula prenanthoides) is native to CA, OR, per the World Checklist of Vascular Plants (Kew).
- What pollinators does California Harebell attract?
- California Harebell draws bees and butterflies.
- Is California Harebell HOA-friendly?
- California Harebell takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow California Harebell? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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