A pot assembly includes a pot having an inner part and an outer part which supports the inner part. A hollow area is defined between the inner and outer parts, and a recessed space is defined between an inner bottom and the periphery of the inner part. At least one hole is located at a position of the space and communicates with the hollow area. A water-guide member includes multiple particles, and irregular paths are defined between the particles. The water-guide member is located at traces between the space and the at least one hole. Liquid in the hollow area slowly spreads upward into the soil in the space by way of the surface tension and the paths. The owners do not need to water the plants frequently.
