Annuals are plants that are sown as seed, germinate, grow to maturity, flower, are pollinated, set seed and then die within one growing season.
Most food crops that are grown from seed, such as cereals and lettuce, are annuals.
Cereal crops and ornamental grasses are generally wind pollinated.
Most ornamental flowers, fruit and vegetables that are annual are pollinated by insects.
See also ‘hardy annual’