Amsonia A tough, but sadly underused perennial, amsonia produces clusters of sky-blue flowers in late spring. Its not just a one-season wonder, though. In autumn, its foliage turns brilliant shades of gold — enough to rival many of the trees when they put
Though it has the word weed in its common name, don't let that scare you away from butterfly weed (Asclepias tuberosa). Sometimes called milkweed, it's as easy to grow as a weed but much prettier, plus hummingbirds and butterflies love them!