The growth and development of flowers occurs over several weeks from the germination of seeds planted on the grounds or container to the time in which the flowers bloom. The entire process happens in about five stages for every flower. Although flower species have varying bloom periods, the general growth and development process is basically the same for all flowers. Moderate variations in the length of time of certain stages may differ by flower species - https://www.hunker.com/13426298/the-stages-of-a-flower-from-seed-to-bloom