I have a very steep and large bank area that I have spent a few weeks
burning and removing the roots of dense bramble.
Ideally I'd love to set grass, but there is no way I could mow or even strim
regularly.

I couldn't weed regular tho so shrubs seem out too.

If I was to set wild flowers would I soon get over-run by weeds again?

Any ideas would be greatly appreciated. By the way the bank overlooks the
sea, so roses and conifers are out!

Thanks,
Jan