This is a bit of an experiment!
I'd planned to create a rockery type arrangement in this bed - the crab apple tree is at the other end, you can just see part of the stake on the left of the photo. In my mind I was seeing it as the sort of rockery with lots of alpine planting but yesterday I was browsing in the garden centre (can't stay away!) and saw these rocks. One quick change of mind later, and I bought a couple together with some grasses to see if I'm happy with how it will look. It's now going to be a selection of grasses with some of these larger rocks arranged in the space. So far I like how it looks but will need to buy some more rocks to get a better idea of the finished result.
A question for all the experienced gardeners out there. Will it be okay to use a covering of bark for weed control or will I (in some way I haven't thought of) be creating problems for myself? Also, do you have any suggestions for grasses that are non-invasive and reasonably low growing (say about 2 feet max). I'd like to add a variety of textures to add interest but which doesn't detract from the tree.