American Giant Vs Mammoth Sunflower
American giant vs mammoth sunflower
Titan Sunflower (H. annuus) One of the tallest-growing, biggest-headed, and largest-seeded varieties available to gardeners. This is the one for impressing your neighbors and winning awards at county fairs. Grow your own backyard giant this year—plants can grow 12' tall with large yellow heads reaching 18-24" across!