A pot assembly includes a pot having an inner part with a recessed space and a transparent outer part which supports the inner part. A hollow area is defined between the inner and outer parts. The inner and outer parts are connected to each other by two respective connection parts. The inner bottom of the space has a recess and a hole is defined through the inside of the recess and communicates with the hollow area. A water-guide member is located in the recess and the other end of the water-guide member is located adjacent to conjunction area between the hole and the hollow area. The water-guide member includes multiple particles and liquid spreads in the soil in the space via the paths between adjacent particles. A hollow hose is connected to the inner or outer parts for communication between the air inside and outside of the hollow area.
