I have a gap in my Pink bed. It is behind the Rowan tree, along the West facing fence and it looks particularly gappy in Winter.
Obviously, once the Rowan tree comes into leaf, the Berberis gets going and the Buddleja flowers it will be less obvious, but it still needs filling.
The gap was created by cutting off one half of the Ceanothus which bushed out into the Pink bed and by hard pruning the Clematis montana last year, so whatever is put there will need to deal with the original Clematis montana Grandiflora as it grows back as well as the new C. montana 'Mayleen'. But 'Mayleen' seems to be heading off towards the house ie not inclined to cover my gap.
So what to choose?