PERENNIALS FOR DIFFERENT PURPOSES : Page 642
E. Perennials Seldom Used in Small, Refined, FormalGardens. This group contains a few types which should be con-sistently avoided in the development of a small, formal flower garden,where refinement of detail is the main requirement. These plants,when not given careful attention, such as staking and constant cuttingback, will produce a loose, ragged effect and will crowd out many ofthe small types of perennials which are admirably adapted for use insmall formal flower gardens.
Achillea ptarmica flore pleno Aster (in variety)
Double Tansy Hardy Aster