Usually domestic potted plants need to be retransplanted during the growth process to maintain further healthy growth of the plants. This design takes advantage of the degradable properties of coffee grounds and is designed in a nested manner. When the plant root system continues to spread and develop, and the capacity of the small pot reaches a critical point, only a larger circle of pots can be nested to achieve the effect of no transplantation, and the small pots inside will be gradually degraded into nutrients and turned into soil under the action of water and plant roots.