HARDY SHRUBS 229 



Douglas' spirea, S. Douglasii. 



Blossoms late, in July. 

 Hard -hack, S. tomentosa.* 



Much like the last, but less showy. 

 Willow -leaved spirea, S. salicifolia.* 



Various other spireas are hardy and desirable. 

 Nine-bark, Physocarpus opuUfolia* (Spircea opulifolia). 

 Exochorda, Exochorda grandiflora. 



A large and very showy shrub, producing a profusion of apple-like 

 white flowers in early spring. 



Various roses. 



Hardy roses are not always desirable for the lawn. For general 

 lawn purposes the older sorts, 1 single or semi-double, and which do not 

 require high culture, are to be preferred. (See pages 148, 149.) 



Japanese rose, Rosa rugosa. 



Most excellent for lawn planting, as the foliage is thick and not 

 attacked by insects (Fig. 184). 



Wild swamp rose, Rosa Carolina* 



Wild dwarf rose, Rosahumilis* (R. lucida of Michigan). 



Say's Rose, Rosa Sayi* 



Excellent for lawns. 

 Weigela, Diervilla Japonica and other species. 



Free bloomers, very fine, in many colors. 

 Dwarf buckeye, jEsculus parviflora. 



Attractive in habit, foliage and flower. Produces a large mass. 



Flowering almond, Prunus Japonica. 

 Daphne, Daphne Mezereum. 



Produces rose-purple or white flowers in abundance before the leaves 

 appear. Our earliest shrub in flowering. Dwarf, and should be planted 

 on the edges of groups. 

 Forsythia, Forsythia viridissima. 



Blossoms yellow, appearing before the leaves. Requires protection in 

 many places. 

 Drooping forsythia, F. suspensa. 



Makes an attractive mass on a bank or border. (Page 213.) 

 White alder, Clethra alnifolia. 



A very fine, hardy shrub, producing very fragrant flowers in July and 

 August. Should be better known. 



