The apple blossom is a typical angiosperm flower, with petals surrounding multiple pollen-producing structures called stamens, the male reproductive organs of the flower, which are crowned with sticky pollen-collecting stigma. When fertilized by pollen, the female ovary at the base of the flower enlarges and becomes the fruit. Most apple blossom petals are are pink when the flower first blooms, and they fade to white as the season progresses.