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True biennials flower only once, while many perennials will flower every year once mature. The Sweet William Dwarf plant is a biennial plant. Biennials grown for flowers, fruits, or seeds are grown for two years, whereas those grown for edible leaves or roots are harvested after one year—and are not kept a second year to run to seed.
Oenothera gaura is a biennial plant, meaning it completes its life cycle over the course of two growing seasons, in which it will usually reach full maturity towards the end of the second growing season. It lives mostly in prairies throughout North America, and in dry, rocky places and deserts. It prefers sunny, dry areas, but has the ...
Biennial plants are a small group of plants whose life cycle normally lasts two years. This list also includes those perennials which are frequently treated as ...
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Oenothera biennis, the common evening-primrose, [3] is a species of flowering plant in the family Onagraceae, native to eastern and central North America, from Newfoundland west to Alberta, southeast to Florida, and southwest to Texas, and widely naturalized elsewhere in temperate and subtropical regions. [4]
This is an annual or biennial herb producing a single erect green to reddish stem up to 2 metres (6 ft 7 in) in maximum height. It is generally hairless and unscented. The frilly leaves are up to 13 centimetres (5.1 in) long and divided into thin, lance-shaped segments with long te
Campanula americana, the American bellflower, [3] or tall bellflower, [4] is a bellflower native to eastern North America. Tall bellflowers can be annual or biennial with a varying life-history with seeds germinating in the fall producing annual plants and spring-germinating seeds producing biennial plants .