Physical Changes on a Flower

Topics: Plant morphology, Flower, Plant stem Pages: 3 (661 words) Published: November 25, 2012

The Stages of a Flower from Seed to Bloom

(The process by which flowers changed physically)

It usually takes at least seven weeks for a flower propagated from a seed to bloom.

The growth and development of flowers occurs over several weeks from the germination of seeds planted in the ground to the time in which flowers bloom. The entire process happens in about five stages for most flowers. Although different flower species have various 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.

Stage 1: Days 1 Through 5

The seed begins the germination process soon after being planted. During day 3 of the initial growth and development stage, imbibition starts whereby the dry seed takes in water from the ground. Shortly after this occurs, the radical (root) emerges from the seed coat on or about day 4. On day 5, the radical begins to extend and develops a root system at one end and a stem at the other end. The stem starts the process of making its way upward and eventually past the soil's surface.

Stage 2: Days 6 Through 26

Stage 2 is the stage in which a flower's leaves develop. Leaf development usually begins on day 6 and continues to day 26. Leaves begin as tiny rosettes (leaf buds). As the stem begins growing leaves, the development of a flower's primary root structure also culminates usually sometime after day 14. Even though leaf growth does not officially happen until stage 3, the first leaf buds may begin growing after day 18 and continue until day 26.

Stage 3: Days 19 Through 30

Slight leaf growth overlap exists between stages 2 and 3 to account for the time period in which the initial leaf buds embark on growth. However, stage 3 officially marks the entire...
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