Darker even than very, very dark blue, these planters are black as the night. They range in size from seedling trays to a jumbo planters a metre and above, and almost all the materials a planter can be made of like fibreglass and stone. The recurring theme is that each one's as black as the last - apart from the greyish ones. For a wealth of inspiration and expertise, have a look at our Planters Ideas & Advice hub.