Grows to 12 feet for impressive height and visual impact
Produces large, solid yellow blooms that attract bees and pollinators
Drought tolerant and thrives in average soil for low-maintenance gardening
Produces abundant, nutritious grey striped seeds for culinary and bird feeding
Tall growth makes it an effective privacy screen
Summarized by Shop
Sunflower (Helianthus annuus) This mammoth sunflower earns the name, growing to a soaring 12ft! The massive blooms hum with bees all summer and the seed heads produce pounds of nutritious grey-striped seeds. Grown in a tight row these giants make a great privacy screen and they are drought tolerant and thrive in average soil. Origin: The
Plant species
Helianthus annuus
Packet size
Approximately 30 seeds
Germination rate
91% (tested 9/17/24)
Planting depth
1 inch
Spacing
12 inches between plants
Sunlight requirement
Full sun
Summarized by Shop
5.0
6 ratings
5
4
3
2
1
All seed packets planted sprouted.
M
Margaret · June 14, 2025
Still seedlings, but growing like weeds. Very satisfied.
J
Joyce · April 8, 2024
We love our mammoth sunflowers sooo much! They are our favorites every year!