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Helianthella parryi, common name Parry's dwarf-sunflower, [1] is a North American plant species in the family Asteraceae. It grows in the southwestern United States, in the States of Arizona, New Mexico, Colorado, and Utah. [2] [3] Helianthella parryi is a herbaceous plant up to 50 cm (20 in) tall. The plant usually produces only one yellow ...
Was grown as a companion for corn (maize) before modern Europeans arrived in the Americas, supposedly increases their production, ants herd aphids onto sunflowers, keeping them off neighboring plants. Works as a trap plant for thrips keeping them off of bell peppers. [70] Planting near swan plants help sunflowers grow rapidly. Swan plant
The plant has an erect rough-hairy stem, reaching typical heights of 3 metres (10 feet). The tallest sunflower on record achieved 9.17 m (30 ft 1 in). [3] Sunflower leaves are broad, coarsely toothed, rough and mostly alternate; those near the bottom are largest and commonly heart-shaped.
The disk of a sunflower is made up of many little flowers. The ray flowers here are dried In North Carolina A sunflower seed growing. Sunflowers are usually tall annual or perennial plants that in some species can grow to a height of 300 centimetres (120 inches) or more. Each "flower" is actually a disc made up of tiny flowers, to form a larger ...
Helianthus pumilus is a North American species of sunflower known by the common name little sunflower [1] or bush sunflower. [2] It is found in the western United States, primarily the Rocky Mountain region of Montana , Wyoming , and Colorado , with a few isolated populations in Utah and Idaho .
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 ...
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.
Helianthus debilis is a species of sunflower known by the common names cucumberleaf sunflower, beach sunflower, weak sunflower, [2] and East Coast dune sunflower. [3] It is native to the United States, where it can be found along the Atlantic and Gulf Coasts . [ 4 ]