Helianthus bolanderi
serpentine sunflower
Family Asteraceae
IUCN: Least concern Wikipedia (opens in a new tab)
About
Serpentine sunflower is an annual wild sunflower of the mountains of California and Oregon, often found on serpentine soils.
Care at a glance
- Pet safety
- Not recorded. We have no source on whether this plant is safe for cats, dogs or other pets — that is not the same as safe. Keep it out of reach until you have checked.
- People
- Not recorded.
- Light
- Full sun gives the most flowers; partial shade is tolerated. General guidance for the genus
- Propagation
- Seed or stem cuttings. General guidance for the genus
“General guidance for the genus” marks advice sourced for the genus as a whole rather than this species.
Field notes
Morphology
An erect annual over 1 m tall with a rough, hairy stem. Leaves are lance- to oval-shaped, sometimes toothed, 3–15 cm long; many flower heads may form along the stem.
Distribution & habitat
Southwestern Oregon and northern and central California south to Santa Cruz County, mainly in mountains. Scattered southern California records are probably garden escapes.
Conservation
Assessed as Least Concern by the IUCN.
Habitat
- Altitude
- Not recorded
- Altitude class
- —
- Native to
- United States
- IUCN status
- Least concern
Cultivation
- Difficulty
- Not recorded
Text adapted from Wikipedia, CC BY-SA 4.0.
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