Sunflower ‘Greenburst’
Helianthus annuus
Description
I adore this cheerful double, early-blooming variety with its fluffy yellow petals around a clear, bright green center. Flowering just 2 months from seeding, this cutie can be succession-sown from early spring through midsummer for flowers from early summer through late autumn. ‘Greenburst’ is pollenless and won’t stain. We grow loads of this variety every year.
Details
Height: 60 to 72 in
Site: full sun
Days to maturity: 60 to 70 days
Plant spacing: 18 to 24 in
Pinch: when 18 in tall
Seed Sowing & Growing Notes
Sunflowers can be direct-seeded into the garden after all danger of frost has passed or started indoors in trays and transplanted out after 2 to 3 weeks.
Harvesting/Vase Life
Details
Description
I adore this cheerful double, early-blooming variety with its fluffy yellow petals around a clear, bright green center. Flowering just 2 months from seeding, this cutie can be succession-sown from early spring through midsummer for flowers from early summer through late autumn. ‘Greenburst’ is pollenless and won’t stain. We grow loads of this variety every year.
Details
Height: 60 to 72 in
Site: full sun
Days to maturity: 60 to 70 days
Plant spacing: 18 to 24 in
Pinch: when 18 in tall
Seed Sowing & Growing Notes
Sunflowers can be direct-seeded into the garden after all danger of frost has passed or started indoors in trays and transplanted out after 2 to 3 weeks.
Harvesting/Vase Life
Sources
How to Grow
How to Grow

Summer Mini Course
Learn how to grow, harvest & arrange beautiful cut flowers
In our upcoming three-part video series, you’ll learn a simple step to double the number of blooms your plants produce, how to cut and care for your flowers for the longest vase life, and how to make mixed bouquets quickly and efficiently.