Abstract: A plant container for greening walls has a main body defining a chamber to receive a growth medium for a plant. A draining pipe is coupled with the main body, extends along a back wall of the main body and has a top end, a bottom end and an opening in a wall of the draining pipe to allow water from inside the chamber to enter inside the draining pipe. The opening in the wall of the draining pipe extends from a bottom wall of the main body. A connecting conduit is configured to connect the bottom end of the draining pipe with a top end of the draining pipe of another plant container of the same type. A through hole extends along the whole length of the draining pipe.