Posted: 24/02/2013 at 13:41
Oooh that bank is full of possibilities - I think I'd treat it as if it was a woodland fringe and create planting pockets within the tree roots - digging individual planting holes for each plant and working in some compost, rather than trying to improve all the soil. I'd plant the sort of things you find in a hedgerow, both wild varieties and some 'improved' ones - e.g. primroses, sweet violets, red and white campion, foxgloves, ferns, hedge garlic, black leaved cow parley (anthriscus sylvestris 'Ravenswing'), native bluebells (not Spanish) and native daffodils (narcissus pseudonarcissus) and/or, as you're in Wales, the Tenby daffodil (narcissus obvallaris), arum pictum, honeysuckles, Clematis vitalba (Traveller's Joy/Old Man's Beard) . You could also put in some rambling roses, hazel, sambuccus niger (black leaved elder) - the list goes on ..... Because you've got all those tree roots when planting shrubs I'd buy small ones and create as big a planting pocket as you can, that way they'll have the best possible chances to grow away, and they'll soon grow bigger than if you planted larger shrubs (if you get my meaning - it sounds a little confused but I know what I mean - hope you do too )
I once had a house in a similar situation but in East Anglia - the bank behind the house was solid clay - we did manage to create a lovely garden. The trick is to garden to your conditions - not try to make your garden look like other peoples'.
Oh, and love that moss - I'd be perfectly happy with moss in a 'woodland fringe' type garden - gorgeous