California Sunflower
Helianthus californicus
Last reviewed: July 2026
Helianthus californicus is a native California sunflower that blooms from June through September with bright yellow flowers. This drought-tolerant forb thrives in full sun and attracts bees and butterflies.
California Sunflower (Helianthus californicus) 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"–48" H × 12"–36" W
Bloom
Jun, Jul, Aug, Sep
Native to
CA
Pollinators
bees, butterflies
Browse plants for this ecoregion
This sunflower is a perennial wildflower with bright yellow blooms that appear from summer through fall. It grows in an upright form with daisy-like flowers that reach 1-4 feet tall. This drought-tolerant native thrives in full sun with minimal water once established.
Growing California Sunflower
Grow California Sunflower in full sun and low water. Mature plants reach 12 to 48 inches tall and spread 12 to 36 inches wide. Expect moderate maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
California Sunflower is an HOA-friendly choice in the right placement. Maintenance level: moderate. Tidiness: 2 out of 5.
Works well in: mid zone, foundation.
- Can appear somewhat informal or wild when in full bloom
- May look untidy during dormant season
- Height might be considered too tall for prominent front yard positions
Wildlife value
This sunflower is excellent for supporting native pollinators, attracting numerous bee species and butterflies that feed on its nectar and pollen.
Common questions
- When does California Sunflower bloom?
- Helianthus californicus typically blooms from June through September, producing bright yellow sunflower heads during the warm summer months.
- What pollinators visit California Sunflower?
- California Sunflower attracts various bees and butterflies, making it valuable for supporting native pollinator populations in California gardens.
- How much water does California Sunflower need?
- This native sunflower is drought-tolerant and requires low water once established, making it well-suited to California's dry climate conditions.
- Is California Sunflower toxic to dogs?
- California Sunflower is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
- Is California Sunflower toxic to cats?
- California Sunflower is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
- Is California Sunflower HOA-friendly?
- California Sunflower 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 California Sunflower? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz