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Here's exactly when to plant sunflowers—plus, how to keep pesky chipmunks away. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
What kind of sunflowers should you plant? There are countless types of sunflowers, including branching types with multiple stems.Read the seed package or description to learn how tall each variety ...
Plant these as a winter sowing or cold stratify them for spring planting. Swamp sunflower (H. angustifolius) . As its name suggests, swamp sunflower tolerates wetter sites than other sunflowers.
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.
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 .
Globally, sunflowers are the fourth most important oil crop. Most of the sunflower seed crop is crushed for oil, and most of the oil is consumed by humans. A major byproduct of crushing is protein-rich cake, an excellent feed for livestock. A tiny proportion of the global sunflower crop is directly eaten as “nuts” or kernels.
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 ]
It is a perennial herbaceous plant up to 2.5 m (8.2 ft) tall, spreading by means of underground rhizomes. The leaves are long but very narrow, up to 21 cm (8.3 in) long, but rarely more than 1.2 cm (half an inch) wide. One plant usually produces 6-15 flower heads, each containing 10-20 yellow ray florets surrounding 50 or more red disc florets. [4]