To most of us, fall color means the brilliant oranges and reds of the turning maple leaves. It’s easy to get so caught up in the foliage above our heads that we overlook those other contributors to spectacular fall color — the late-flowering herbaceous perennials. The blue star is grown primarily for its fall foliage — a soft yellow, feathery mass. Pink asters and brown-eyed Susans add bursts of color to a fall garden. In the planting frenzy that follows long winters here, the urge is to plant anything and everything that shows any color.