Desiccation, the drying of all plant parts, is taking place in last phase. Like tree leaves in the fall, the leaves are losing their chlorophyll green color leaving behind yellow and purple. Chlorophyll is needed for plant growth, so this change means the plant is stopping to grow. Look at the small buds that are still emerging, and the plant will use what little chlorophyll it has left to produce one more set of flowers. The Fast Plant flowers in several waves, each time smaller in size and number. Since there is no change in seasons, this color change was determined by DNA coding. Water is need for life and removed for death. Drying up of the plant is necessary for the seeds to form, pods to fall, and life to continue.