What39s not to like about these graceful perennial plants33 tall clumps of slender semi45evergreen grass45like leaves are topped with a profusion of arching flower stems in july and august the exquisite bell45shaped flowers drip from incredibly delicate stems swaying and nodding in the slightest breeze giving rise to the common name angels fishing rod this dierama collection is a wonderful addition to cottage gardens gravel gardens or herbaceous borders where they partner