Pruning salvia indigo or perhaps I should call this post 'How to prune a "broken" Salvia Indigo'? I love this plant, and it breaks my heart to see it broken. I mean who can resist this outstanding plant? It's the perfect combination of large green leaves and stunning deep blue bloom. The salvia indigo spreads itself all over the place, sending its long woody "arms" out to the world and responds tremendously to a good decent pruning, which is after all why we are all here - so let's prune!