I am trying to reclaim a long neglected woodsy garden. It was badly overgrown with vines and weed trees, and last summer I chopped off the vines and thinned out some of the trees. This spring, I discovered a long neglected stand of Spanish bluebells. They have been blooming so little over the past years, that I had forgotten all about them. There is a lot of vegetative growth, however, and they have spread quite nicely. Is there anything I can do to encourage more bloom? Should I expect that they will bloom better now that some of the shade has been removed?