Botanical Interests® Sunflower Mammoth Organic – Seeds – Botanical name Helianthus annuus. Yellow flowers with a brown center get up to 12″ wide. Plants grow to 6′-12′ tall. Easy to grow, heat tolerant, drought tolerant, and attracts pollinators. Thrives in full sun. Does good as cut flowers as well because of its long, sturdy stems.
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