Annual Sunflowers

helianthus-annuus-sunflower-csu-23jul04-lah-029Sunflowers may resemble a huge yellow sun towering overhead, but their name comes from their ability to keep their “face” turned toward the sun. Everyone recognizes a conventional sunflower with its huge dark disk surrounded by yellow petals, set atop a sturdy stalk that may reach over eight feet in height. A quick tour of a seed catalog shows that this is just the beginning. Breeders have developed shorter plants (as low as two feet) and an expanded palette of hues ranging from mahogany through orange to lemon yellow, white, and even soft rose to wine-red. Many types sport more than one color.

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