202 THE COMPLETE GARDEN 



terraces on a large scale, the dwarf iris, evergreen candytuft, tunica, and 

 speedwell are plants which should be used. It is quite probable, in 

 many instances on paved areas which to be on a firm foundation have 

 but a small layer of loam between the stone and the cinders, that these 

 plants will be frequently winter-killed and require replacing. If it so 

 happens that these paved areas can be successfully laid, because of 

 local climatic conditions, upon a good depth of sandy loam, then 

 these plants must seldom be replaced, but rather frequently thinned 

 out. 



There are many indigenous mosses which can readily be trans- 

 planted in tufts to fill the crevices between the stones on paved walks, 

 thus presenting the appearance of age during the first years after con- 

 struction. Most of the mosses require a considerable quantity of 

 water to make them thrive. There are a few varieties, however, 

 found in open, sunny locations, that will thrive with little moisture. 

 Therefore, before using moss to fill the crevices between flags on paved 

 areas, the natural habitat of the moss to be used should be known. 



In one of the former groups of plants for dry locations and for em- 

 bankments, the discussion was directed toward the effects of drying 

 out. There are instances where the open exposure and the effect of 

 the sun develop a situation requiring plants that will withstand ex- 

 treme sun exposure. These plants can be adapted to light, sandy 

 soil, and they form a small group, with the stonecrops, the Adam's 

 needle, and the maiden pink as typical varieties, which may be planted 

 under the most adverse conditions of exposure and sun. 



Quite often one finds plantations of rhododendrons and azaleas which 

 have fallen just short of being really interesting because of the lack of 

 some ground-cover planting to give the added and desired touch of in- 

 terest. This may be for the purpose of relieving the bare ground 

 around the edges of the plantation, so often covered in a successful 

 manner with Japanese spurge, periwinkles, ferns, and andromedas. It 

 may be that one desires a touch of colour so often obtained by the 

 introduction of the different types of lilies, which can be successfully 

 grown in plantations of hybrid rhododendrons. Especially in plantings 

 of large and native rhododendrons, many of these ground-cover plants 

 can be introduced with a great degree of success to relieve the "leggy" 

 appearance of these plants and to make an interesting mat over the 

 ground which might otherwise be more or less bare. The ground 

 among rhododendrons is subject to more or less heavy shade for two 



