Enjoy the Dorcaster cylinder planter in your garden today! The Dorcaster square planter range has been developed due to popular demand. The round simplicity of the design with the different available heights makes it very desirable. These tall planters are used to great effect when the height is needed to create impact and add structure in a garden or on a balcony or roof terrace. They are lighter in weight yet ultra-durable, even in freezing and high-traffic conditions.