cortensteel edge around the triangle add the following plants one miscanthus sinensis yakushima dwarf to the left and of the cortensteel box and one to the right of the cortensteel box a row of festuca glauca elijah blue along the rightern edge some heuchera obsidian in a group in front of the cortensteel box ajuga reptans black scallop in the gaps a group of persicaria amplexicaulis blackfield aroudn the stem of the tree
