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Helianthus argophyllus is the silver leaved variety of the sunflower. The flower heads are yellow. The leaves have a soft, silky, silvery down.

Flowering Branch of a Sunflower (Helianthus Argophyllus)

Helianthus argophyllus is the silver leaved variety of the sunflower. The flower heads are yellow. The…

The helianthus decapetalus multiflorus sunflower has firm leaves and large heads. The common form has a dwarf habit with double flowers.

Flowering Branch of a Sunflower (Helianthus Decapetalus Multiflorus)

The helianthus decapetalus multiflorus sunflower has firm leaves and large heads. The common form has…

Helianthus orgyalis sunflowers have small, yellow heads. The flowers bloom in the autumn. The plant grows between six and ten feet tall.

Upper Portion of Stems and Detached Flower Head of a Sunflower (Helianthus Orgyalis)

Helianthus orgyalis sunflowers have small, yellow heads. The flowers bloom in the autumn. The plant…

Sunflower grow to be six feet tall. The flower heads are large, varying in size and color.

Flower Head of a Sunflower

Sunflower grow to be six feet tall. The flower heads are large, varying in size and color.

Helianthus annus caifornicus plenissimus is the scientific name of the pictured sunflower. It is another form of the common sunflower.

Habit and Detached Single Flower Head of a Sunflower

Helianthus annus caifornicus plenissimus is the scientific name of the pictured sunflower. It is another…