Sunflowers (Helianthus spp.) add a splash of color to almost any home garden. Usually grown as annuals, many varieties are also desirable for their tasty seeds. The plants range in size from just 3 feet in height to over 14 feet tall, depending on the species and cultivar. Although many types of sunflowers look like they have just one giant flower, in reality each flower head is composed of thousands of tiny blooms.
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