I have one of these next to our terrace. The soil is a good loam but damp all year and wet in winter despite a drain being built on the other side between it and the lawn and which becomes a "canal" in winter. It gets sun early morning and late afternoon between April and early September as there's no shade apart from our north facing house wall.
Plants - Japanese anemone, hardy ferns, chelone, astible, aquilegia, tall white primulas and cowslips, hostas, hakonechloa grass, astilboides, lily of the valley. I did also have molinia grasses but they were the wrong scale so have been moved to another damp bed near my unlined pond. There are also two golden/bronze dwarf conifers but I can't remember which and the lawn side is bordered by a low hedge of another blue/green conifer with a white mark on its needles - again, name unknown. I put wildlife friendly slug pellets down in early spring and again at regular intervals until early summer and this deals with most of teh slugs so teh hostas don't get full of holes.
