Creating a rock garden
I was quite inspired by the piece on Rock Gardens a couple of weeks back and I have the ideal space for it. However, as you can see from the picture, the ground is unprepared and there are some very mature trees around with roots and ivy. The space gets minimal sunlight as it is largely blocked by overhanging tress branches and a barbecue area.
It looks like a bit of dumping ground and needs plenty of love and attention. Soil is quite hard and plenty of clay. I would like to know how to treat the soil and what plants would be good for it. I can't seem to dig it easily with a spade.