The invention relates to wall planter 10 comprising a wall body 20 supporting plants "X" in a growing medium, an evaporator 30 having an evaporator surface 31 connected to the bottom of the wall body 20, a tank 40 adapted to store water below the evaporator, and delivery means 50,51,52 to deliver water from the tank to the top of the wall body. In use water is delivered to the top of the wall body and allowed to drain through the growing medium to the bottom of the wall body, drain into the evaporator, and back into the tank, said evaporator evaporating some of the water into ambient air.
