A bowl garden planter is a container that has a wide base and narrow top. The idea behind this design is to present an illusion of depth to the viewer.
There are many advantages to using a bowl garden planter over other types of containers, such as pots and window boxes. For example, the weight of the soil in this type of planter is not concentrated in one place, which makes it much easier on the plant's root system. Also, some plants grow better when they have more surface area in regards to their roots rather than being planted deep into the ground.