222 



THE COMPLETE GARDEN 



B. Perennials According to Colour and Season. This, with 

 its sub-groups, is an interesting group. The division of seasons in 

 these groups is merely relative and is made for the purpose of obtaining 

 some relationship in the succession of bloom throughout the growing 

 season. Many perennials in these groups lap over from one group 

 into the other, but for convenience of reference they are listed only 

 in the season during which they are at their height of bloom. The 

 subdivisions into colours of flowers, as a matter of easy reference, will 

 prove valuable as a check on one's memory and a saving of time in 

 being able to readily select flowers for varying colour effects at diflFer- 

 ent seasons. 



a. Perennials for spring — purple, lavender, or blue flowers: 



Ajuga genevensis 



Erect Bugle 

 Anchusa italica 



Italian Alkanet 

 Aquilegia caerulea hybrida 



Rocky Mountain Columbine 

 Auhrietia deltoidea graeca 



Grecian Purple Rock Cress 

 Iris cristate 



Crested Iris 

 Iris germanica hybrids 



German Iris 

 Iris pumila azurea 



European Dwarf Iris 

 Iris versicolor 



Dwarf Blue Flag 

 Linutn perenne 



Perennial Flax 



Mertensia virginica 



Bluebell 

 Myosotis palustris semperflorens 



Forget-me-not 

 Polemonium reptans 



Greek Valerian 

 Primula denticulata 



Himalayan Primrose 

 Saxifraga cordifolia 



Saxifrage 

 Tradescantia 



Spiderwort 

 Veronica incana 



Hoary Speedwell 

 Vinca minor 



Periwinkle 

 Viola cornuta 



Tufted Pansy 



Viola odorata 

 Scented Violet 



b. Perennials for spring — zvhite Hozuers: 



Anemone pennsylvanica 



Canadian Windflower 

 Anemone sylvestris 



Snowdrop Windflower 



Aquilegia nivea grandiflora 

 White Columbine 



Arabis albida 

 Rock Cress 



