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DESCRIPTION:
Sunflowers are large, rough, hairy broadleaf plants with large yellow compound flowers. They may be
summer annuals or perennials and have single or branched stems, depending on species. Seedling seed
leaves are bright green and two to three times as long as wide. Stems of mature plants are thick and
covered with coarse hair. The spade-shaped leaves range from several inches (8 ¬‚ 15 cm) to nearly a
foot (30 cm) across. Flowers are composites with a dark center surrounded by a halo of yellow to
orange petals. When mature, the center disk of the flower head holds scores of seeds that are very
attractive to birds.
Broadleaf ID illustration.
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