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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 .
There are close to 150 species of sunflowers in the genus Helianthus. Most are characterized by brightly colored flowers and rough, sandpaper-like foliage. ... Some popular types of perennial ...
This is a list of plants organized by their common names. However, the common names of plants often vary from region to region, which is why most plant encyclopedias refer to plants using their scientific names , in other words using binomials or "Latin" names.
Helianthus pauciflorus, called the stiff sunflower, is a North American plant species in the family Asteraceae. It is widespread across the Great Plains , the Rocky Mountains , and the Great Lakes region , and naturalized in scattered locations in the eastern United States and in much of southern Canada (from Alberta to Nova Scotia ).
Helianthus giganteus is a perennial herbaceous plant native to the northern United States and southern Canada that can grow up to 1–3 metres (3.3–9.8 ft) tall with instances to 4m (13 feet). The leaves are approximately 1 inch wide by 7 inches long, and partly rough.
Helianthus mollis grows on prairies, roadsides, dry open woods, rocky glades, fields, and thickets. [3] It is a perennial herbaceous plant up to 1.5 m (4.9 ft) tall, spreading by means of underground rhizomes. The leaves are mostly along the stem rather than crowded near the base, each egg-shaped with teeth along the edges.
Helianthus arizonensis is a North American species of sunflower known by the common name Arizona sunflower. It is native to the States of Arizona and New Mexico in the southwestern United States. [1] Helianthus arizonensis is a perennial herb up to 30 cm (12 inches) tall. Its leaves have no hairs.
They’re also one of the longest-lived perennials, with some plants living up to 100 years. Fast Facts. USDA Hardiness Zone: 3 to 8. How Much Sun It Needs: Full sun. When It Blooms: Late spring ...