Last week I pontificated about the merits of the genus Hibiscus and the fact that it is among the very few shrubs that bloom late into the summer. There are a handful of other summer-blooming choices that don’t come in quite so many variations but are just as reliable and dare I say, essential to creating that all illusive “year ‘round interest” in our gardens. Bluebeard is one such plant that will add late season interest in the sunny border with not a lot of fuss…