Helianthus annuus grows natively along roads, fences, and disturbed ground west of the Mississippi, where it seeds itself into existence each year with remarkable ease. The classic form carries the large yellow heads on tall stems, but generations of hybridization have pushed the palette into rich mahogany, burgundy, bronze, white, and vivid bicolors, and shrunk the plant to everything from window-box scale to towering 10-foot specimens. Commercially it is grown for birdseed, livestock feed, cooking oil, and snack food — the steamed flower buds, occasionally eaten as a vegetable, carry a mild artichoke flavor.

In the garden it is among the most uncomplicated annuals: plant in full sun, provide reasonable moisture, and get out of the way. It suits cutting gardens, pollinator beds, vegetable plots, and fence lines equally well. Hardy from zone 2 to 11, it is effectively season-neutral in its adaptability. The one practical note worth keeping: taller varieties with heavy heads may need staking, particularly in exposed sites or after summer rain.