More to explore:
sea holly 'big blue' I love them......so gorgeous
blue and purple border
Campanula 'Blue Wonder'
Sea Holly - it ranges in colour from bright blue to ghostly white ("Miss Wilmott's Ghost") and needs very little water!
Blue and white borders
lovely campanula border
Japanese Bottlebrush...another idea for garden borders
Gorgeous walkway border..
Lavender and Artemesia border
Blue Border Garden | Campanula, Iris, Delphinium, Anchusa
Sunny Border Blue' Veronica
blue veronica in a mixed border