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Annual Sunflowers. The sunflower we all grew up drawing is Helianthus annuus or the annual sunflower.Breeders have been working with this species for years. Selections range from the dwarf ...
Sunflower. Though perennial sunflowers are not quite as large or fast growing as their annual cousins (Helianthus annuus), they are prolific bloomers for up to 12 weeks into the late autumn ...
Perennial sunflower is a crop of sunflowers that are developed by crossing wild perennial and domestic annual sunflower species. Annual sunflower is a major oilseed crop. Genes from wild perennial relatives may increase root depth and mass and extend the growing season. These upgrades means future varieties with higher yields and better soil ...
Perennial sunflowers are in season for a period of 8 to 12 weeks with some beginning as early as July and others ending as late as October. Their large daisy-like flower faces thrive in full sun ...
Helianthus (/ ˌ h iː l i ˈ æ n θ ə s /) [3] is a genus comprising around 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. [4] [5] Except for three South American species, the species of Helianthus are native to North America and Central America.
Heliopsis helianthoides is a species of flowering plant in the family Asteraceae, known by the common names rough oxeye, [2] smooth oxeye [3] and false sunflower. [4] It is native to eastern and central North America from Saskatchewan east to Newfoundland and south as far as Texas , New Mexico , and Georgia .
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