The open plant encyclopedia
Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.
The plants people record most in your country, and ones that grow there wild.
Filter by what you want to do, shape, origin, country, care and safety.
Helianthus cusickii
Also called Parsnip Root Sunflower, Turnip Root Sunflower
Cusick's sunflower is a native perennial wildflower of western North American mountain forests and foothills, grown from a thick, fleshy taproot. It is a sunflower that suits wild or naturalistic gardens where it can be left undisturbed.
Helianthus cusickii is a species of sunflower known by the common names Cusick's sunflower and turniproot sunflower. It is native to the western United States from Washington, Oregon, Idaho, northern California, and northwestern Nevada.
Helianthus cusickii grows in mountain forests and foothills. This wildflower is a perennial up to 120 cm (4 feet) tall, growing from a thick, fleshy taproot. The lance-shaped leaves reach 15 centimeters (6 inches) in length, and the stem and foliage are often covered in long hairs. The flower heads have a base of long, hairy green phyllaries. The center of the head is filled with at least 40 yellow disc florets surrounded by 12–16 ray florets.
Southeastern sunflower · Helianthus ambiguus · Swamp sunflower · Common sunflower · Western sunflower · Silverleaf sunflower · Arizona sunflower · Purpledisk sunflower · Serpentine sunflower · Helianthus brevifolius · California sunflower · Lakeside sunflower
Text excerpted from the Wikipedia article Helianthus cusickii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
