72 FLOWER GARDENING 
indeed if they all have good foliage. “Thus the 
Arabis albida, German iris and hardy chrysan- 
themum would give three separate periods of 
bloom and a continuous gray foliage effect in ad- 
dition. 
But the greater joy is in using a larger number of 
perennials to provide a long succession of dominant 
bloom, any other plants being fillers and therefore 
secondary. 
