Abstract: A trellis system of the invention comprises a trellis and tool in combination. The trellis includes multiple legs and one or more horizontal supports. The tool includes a tray and a coning tool. The tray is adapted to slidably engage the legs by way of engagement means. The coning tool is adapted to engage the ends of the legs to facilitate shaping the trellis into a conical or pyramidal frame if desired. The trellis system can be used as a plant growth support and/or to hold potted plants. It can be installed into the ground or an existing potted plant. The trellis can be inverted position, the trellis can be used as a frame to build ornamental Christmas trees.