Some characteristics to consider in outdoor garden pottery include the right size, weather resistance, drainage holes, weight and aesthetics, according to The Ohio State University Extension for Agriculture. The size and style of pottery selected depend on the use for each pot and personal preference.
The key characteristics for garden pottery are that the pot be large enough for the plant and weather resistant. Unfortunately, ceramic pots can crack in the winter when they absorb water that freezes. A glazed pot that is kept in a well-protected area may work.
Remember that pots get very heavy when filled with dirt. A large pot may become impossible to move. Consider smaller pots for more portable use.