by admin on Saturday, March 13, 2010 13:07 under Interesting Facts.
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- Annuals are plants that grow from seed, flower, disperse their seeds and die in a single season.
- Some annuals’ seeds lie dormant in the ground before conditions are right for germination.
- With an annual, producing flowers, fruits and seeds exhausts the plant’s food reserves, so once the seeds are dispersed the green parts of the plant die.
- Many crops are annuals, including peas and beans, squashes, and cereals such as maize and wheat.
- Annual flowers include petunias, lobelias, buttercups and delphiniums.
- Biennials live for two years.
- In the first year the young plant grows a ring of leaves and builds up an underground food store such as a bulb or taproot like beetroots and carrots. The food store sustains the plant through the winter.
- In the second year the plant sends up a stem in spring. It flowers in summer.
- Many vegetables are biennials, including beetroot, carrots and turnips.
- Biennial flowers include wallflowers, carnations, sweet williams and evening primroses.
