Disclosed herein is a mesh lined planter box for use in growing of plants where mobility and/or easy removal of the plants and/or growing media is desired. The mesh lining in one example comprises a replaceable fabric mesh bag into which growing media is placed for growing of plants. Also disclosed is a trellis which may be removed from the planter box. The trellis may also include vertically adjustable cross members. A watering system is also disclosed attached to the base unit, or trellis of the planter box. The watering system in one form comprising a plurality of feed lines attached to a common main line and having valves on each feed line.