Large Planting Tubs. Trickerís black planting tubs are designed to be specifically used in the water garden to promote and successfully grow your water plants. They have room for water lilies, lotus and large aquatics to grow and display their beauty. Tricker's customers have used this size for descriptive growth of water lilies and lotus and have enjoyed the benefits. Large Planting Tubs are 9.5"H x 19.5"W.