Tall, Sunflower Seed
Tall Sunflower Seed
- Early-Mid Summer, Mid-Late Summer, Early-Mid Fall bloom season
- Full Sun, Partial exposure
- Medium, Medium to Wet soil moisture
- 36–48 inches plant spacing
Key Attributes
About Tall, Sunflower Seed
Tall Sunflower (Helianthus giganteus) is a distinctive North American native plant. Clusters of yellow flowers crown tall purplish stems, creating late-season color and abundant food for pollinators and birds. It matures at approximately 96 inches tall and flowers from early to mid summer through mid to late summer through early to mid fall. Plant it in full sun to partial shade, in medium to medium-wet conditions, with loamy soil, clay soil or sandy soil. Space plants 36–48 inches apart for healthy growth and airflow.
Growing details
Plant profile
Seed & variety
Before Planting
Planting
Watering
Fertilizer
Harvesting
Tips
Pests & Diseases
Downy mildew, rust, Sclerotinia stalk or head rot, Verticillium wilt, and Phomopsis stem canker affect sunflowers. Choose resistant hybrids, rotate away from susceptible broadleaf crops, and avoid dense stands. Remove volunteer sunflowers and do not save seed from moldy heads or plants with stalk decay.
Sunflower moths, beetles, cutworms, aphids, birds, and squirrels may damage plants or seed heads. Scout buds and leaves, handpick insects, and protect ripening heads with breathable barriers.
Native States & Regions
- Alabama
- Arkansas
- Connecticut
- Delaware
- Georgia
- Illinois
- Indiana
- Iowa
- Kentucky
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- New Hampshire
- New Jersey
- New York
- North Carolina
- Ohio
- Pennsylvania
- Rhode Island
- South Carolina
- Tennessee
- Vermont
- Virginia
- West Virginia
- Wisconsin
Native regions: Widespread Native
Tall Sunflower Native Range Map
Native range describes natural occurrence, not the origin of this seed lot or every location where a plant can be grown.
Alaska and Hawaii are shown as insets. State-level range does not mean a plant occurs throughout every part of that state.
Urban Farmer
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