To provide a cover for gardening planter that can easily improve the appearance of the gardening planter and can easily be assembled and assembled.

The cover is composed of a two-sided panel member 1 that is foldable into L-shape to fit at least the bottom and the front sides halfway of the longer side of a gardening planter 10 and is provided with projected pieces 1d, which are enlarged towards the end and is formed by cutting and raising to one direction at the positions that span over the folding line 1c inside the folded part, and apertures 1e formed towards the opposite direction that can be set with the aforementioned projected pieces 1d to maintain the L-shape by fitting the above mentioned projected parts 1d to the apertures 1e. It is also composed of the pair of three-sided panel member 2 and 2 that can be folded along at least the end, bottom, and the front sides of both ends of the longer side of the gardening planter 10, and is formed by joints 2i and 2j created by indenting together the concave and convex parts that exist along the line extended from the corner 2g formed by these three sides 2d-2f at the panel member along any one side 2f of the above-mentioned three sides.