An annual plant is a plant that usually germinates, flowers, and dies in a year or season.
True annuals will only live longer than a year if they are prevented from setting seed. Some seedless plants can also be considered annuals even though they do not grow a flower.
Summer annuals sprout, flower, produce seed, and die during the warmer months of the year.
Winter annuals germinate in autumn or winter, live through the winter, then bloom in winter or spring.