This category is for sites on the annual showy sunflower, Heliathus annuus, which is often grown for its very large flower. Other garden sunflowers also exist which are perennials.
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Related categories 2
Sites 2
Guide to sunflower gardening provides descriptions of different species, cultivation information, and fun facts.
Information from Iowa State University.
Guide to sunflower gardening provides descriptions of different species, cultivation information, and fun facts.
Information from Iowa State University.
