SYST 15 Seeds Mammoth Grey Stripe Sunflower Heirloom Seed Catalog Home Garden

Mammoth Grey Stripe Sunflower (Helianthus annuus) is a very popular variety of sunflowers best known for its towering height and beautiful broad flowers. Native to North America, this annual can grow to be 12' tall and have flowers up to 20" wide, but mostly average 10' tall and around 12" wide blooms. The large seed heads produced by the plant are excellent for harvesting for yourself or simply leaving out for the birds

Germination in 5-14 days, maturity in 120 days

Collected: 11/23

Germination: 85%

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