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The common sunflower (Helianthus annuus) is a species of large annual forb of the daisy family Asteraceae. The common sunflower is harvested for its edible oily seeds, which are often eaten as a snack food. They are also used in the production of cooking oil, as food for livestock, as bird food, and as a plantings in domestic gardens for ...
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 .
Helianthus agrestis are an annual species that flower in the late summer to early fall months. [5] Helianthus species require a lot of sun to grow. For optimal growth, the plant should get at least 6 hours of full sun a day. [1] Sunflower seeds also contain a toxic substance that will kill all nearby grass. [8]
Helianthus devernii is a North American species of flowering plant in the daisy family Asteraceae, known by the common name Red Rock sunflower.The perennial herbaceous plant is endemic to a portion of Nevada's Red Rock Canyon National Conservation Area measuring less than 1 acre (4,000 m 2), where it grows in just two desert spring locations within the Mojave Desert.
Helianthus strumosus, the pale-leaf woodland sunflower, [3] is a species of sunflower native to North America east of the Great Plains and is in the family Asteraceae. [4] It is a native perennial sunflower that resembles other members of this family including the Pale Sunflower (H. decapetalus), Woodland Sunflower (H. divaricatus), Hispid Sunflower (H. hirsutus), and Jerusalem Artichoke (H ...
Helianthus decapetalus, known by the common names thinleaf sunflower, [3] thin-leaved sunflower, [4] and woodland sunflower, [5] is a perennial forb in the family Asteraceae.It is native to the Eastern and Central United States and Canada, from New Brunswick west to Iowa, Wisconsin, and Ontario, south as far as Georgia and Louisiana.
Helianthus annuus 'Russian Giant' can grow in a neutral to alkaline, well-drained moisture, rich in humus, and moderately fertile soil exposed to full sun. A cane might be needed to support the weight of the bloom.
The Jerusalem artichoke (Helianthus tuberosus), also called sunroot, sunchoke, wild sunflower, [3] topinambur, [3] or earth apple, is a species of sunflower native to central North America. [ 4 ] [ 5 ] It is cultivated widely across the temperate zone for its tuber , which is used as a root vegetable .