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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 flower heads are bright
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 ...
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 ...
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.
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. Annuals will also typically bloom all season ...
These show-stopping annuals are sure to brighten up your garden. Here's exactly when to plant sunflowers—plus, how to keep pesky chipmunks away. Want Big, Beautiful Blooms?
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