Sigma Planters is Brisbane’s biggest supplier of Fibreglass and GRC planters. If you are searching for garden decoration material then hold on. You are in right place. Sigma planters offering you the best planters and pots online to design your garden. You can order trough, round and square planters to give new look to the garden. Sigma Planters offers a variety of pots or planters with different shapes, sizes, and colors.