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Helianthus annuus 'Russian Giant' is a cultivar of sunflower in the family Asteraceae. [1] It is an annual. [2] [3] [4] ... Its seeds are considered to be edible. [5]
The common sunflowers we see in cut flower bouquets are annuals, as are the sunflowers grown for seeds, but other species are perennials. Many perennial sunflowers are native to the prairie ...
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.
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 ...
The short answer is that annuals don't come back. Plants that flower and die in one season are annuals—although many will drop seeds that you can collect (or leave) to grow new plants in the spring.
Once the growing season is done, annual plants must be cut back and removed since the original seed will not bloom again. Benefits of Annual Flowers Longer Blooming Time. Most annuals bloom for ...
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