Cascade Cast Iron Style Small Plastic Ogee Planter - Sand This cast iron style small plastic planter comes in a sand colour, and is part of the Cascade range of guttering from Brett Martin. The Cascade guttering and accessories collection is manufactured to emulate traditional cast iron guttering, but is manufactured from plastic to create a more lightweight, durable and non-corrosive product that is quicker and easier to install. The cast iron style small plastic planter in sand is the perfect way to uplift your home - simply fit the small plastic ogee planters to walls and add a number of plants and flowers to brighten up the area.