Posted: 22/04/2017 at 16:53
I would go with honeysuckle rather than clematis if you're in a hurry as it doesn't need as deep a root run or as many nutrients. I would also go with the mulch plan but lay it on as deep as you can and several times now and in autumn and just leave it for the worms and other organisms to work over for you.
While you wait, grow smaller plants to give you colour and interest - annuals or biennials or perennials as you prefer. You could buy a small honeysuckle or clematis now and grow it on in pots until the bed is ready to plant it - cheaper than buying a big one and it will establish faster.
This would give you time to cork on the weeds coming from the other side but, I have to tell you, that weeds from fields, whether arable or pasture, will always want to come through so when you do fianlly get the soil into a workable state and plant your chosen climber(s) through a weed suppressant membrane and hold that down with pegs and cover it with something like chipped bark to make it look more attractive. However this does mean you can't grow anything else as every planting hole you do make will be an opportunity for perennial weeds to come up.