Wild Sunflower
Helianthus annuus · Warm-season, Annual, C3-C4 intermediate photosynthetic pathway not applicable as this is a broadleaf forb
AI-generated identification · may be incorrect
Grass Category
Wildflower / Native Prairie Forb
Hardiness Zones
USDA Hardiness Zones 2 to 11 as an annual plant.
Grass Family
Asteraceae, subfamily Asteroideae
Variety / Cultivar
Wild type
About This Grass
The image shows a bright yellow flowering plant, specifically the common sunflower (Helianthus annuus). While not a true grass, it grows among grassy native prairies and fields, featuring a prominent dark brown central disk surrounded by vivid yellow ray florets, coarse hairy foliage, and a tall, sturdy stem.
Blade Characteristics
Broad, rough, alternate leaves with coarse texture, ovate to cordate shape, and serrated margins; not applicable to narrow grass blade morphology.
Root System
Deep taproot system with secondary lateral roots, providing excellent drought resistance and soil anchorage.
Growing Information
Origin Region
North America, widespread globally in temperate regions
Growth Habit
Bunch-type, erect single-stemmed annual forb
Sunlight & Water Needs
Requires full sun (6+ hours of direct sunlight) and moderate watering with high drought tolerance once established.
Mowing & Maintenance
Low maintenance wildflower; does not tolerate regular turf mowing, requires no fertilization.
Special Characteristics
Excellent drought tolerance, attracts pollinators, produces edible seeds, and shows strong heliotropic movement during early growth stages.
Ecological Information
Native North American wildflower, highly beneficial for pollinators, birds, and wildlife, frequently found in prairies, roadside ditches, and disturbed soils alongside native grasses.