Another Clay Border Problem
My first post. I'm a rookie gardener in my second year of trying to sort out a mess of a garden we inherited. (We live 700ft up in the Peak District. )
I have one border that is a real problem. There is top soil down for about 7 inches, then below that it is solid red sandy clay. This border also seems to have some builders clay/sand or something mixed in from when previous owners dug foundations for the garage, and kindly dumped all the clay/sand in the garden.
I've dug down about 1.5ft and thought about then adding loads of compost, grit, etc etc that everyone recommends.
However, I'm not sure this will work. All that is happening is that I'm creating a sump full of water because all the surrounding land is solid clay.
So even if I dug down for 2ft, then filled it just with grit/soil/compost all I will be doing is creating a sump full of water when it rains, as the rain will stay in trough I create. Rather like filling the bath with grit, then turning the taps on and hoping the water will disappear. It won't.
Is there any point therefore adding compost and grit if all I'm creating is a bath full of water? Instead should I just go for plants that like wet clay?
I wanted to create a herbaceous border - so I could go for some plants that like their feet being wet (or don't mind it) such as astilbe, and things like geraniums, astrantia, daisies according to the RHS site.
Any thoughts/ideas/info would be great.