Common sunflower
Helianthus annuus
A fast annual for sunny edible, pollinator, and children-friendly beds with bold summer flowers and seedheads.
Native: 40 US states + 4 CA provinces
Focal point
Pollinator
Edible
Light
Full sun
Water
Moderate water
Mature size
1.5-10 ft tall · 24" apart
Lifecycle
True annual (one season)
AHS heat range
6-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
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Native across 44 US states and Canadian provinces - a wide-ranging part of North America's plant communities.
Cold hardiness
This plant is grown as an annual; hardiness zones don't apply.
Heat tolerance
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
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Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Educator packet
Plant packet
Common sunflower educator packet
A fast annual for sunny edible, pollinator, and children-friendly beds with bold summer flowers and seedheads.
Scientific name
Helianthus annuus
Plant type
annual
Hardiness
Annual; NC State profile lists 2a-11b context
Light
full-sun
Moisture
moderate
Spacing
24 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Common sunflower (Helianthus annuus). Retrieved 2026, August 20, from https://plotwright.com/plants/helianthus-annuus
Sources used for this record
This record is compiled from the sources below.
Lady Bird Johnson Wildflower Center Native Plant Database
Botanical research database





