The semi-double flower form and clean green to yellow disk of the Greenburst Sunflower caught our eye in our summer trials. Greenburst Sunflower is a prolific producer, this is a great item for high density plantings, where the branching habit suppresses and offer you single head cuts. When spaced further apart, Greenburst Sunflower branches produce additional secondary flower heads. Matures in approximately 45-50 days.
Color: Golden yellow petals on green to yellow disk
Approximately 10,080 seeds per pound
Soil temperature: 70 - 75 degrees fahrenheit
Germination lighting: Dark required
Germination days: 4 - 8 days
Grow on temperature day: 55 - 60 degrees fahrenheit
Weeks indoor: 4 - 5 weeks
Plant spread: 12 - 16 inches
Plant height: 60-72''
Plant type: annual
Maturation days: 45-50 days