Dierama is a very graceful hardy perennial which makes a beautiful addition to cottage garden borders it is oten referred to as angel39s fishing rod and looks particularly attractive when overhanging water the slender stems arch and tremble in the breeze adding movement and fluidity to planting schemes 39blackberry bells39 bears clusters of delicate deep purple45pink bell45shaped flowers which rise above clumps of slender semi45evergreen grass45like foliage in july