THE HORTICULTURAL SOCIETY OF NEW YORK 



provided they are given a well-drained, stony soil with plenty of 

 humus. The surface of the soil about the plants should be cov- 

 ered with small stones to prevent evaporation of moisture and to 

 keep the ground cool. 



The hardy pinks never look out of place in a rock garden pro- 

 vided that one excludes the florists' varieties. The most desirable 

 of them all is the Glacier pink, Dianthus neglectus. This family 

 contains many other excellent rock plants that can be grown with 

 very little trouble, for example : Saponaria ocymoides, Gypsophila 

 repens, several species of Arcnaria, Silene, and Cerastium. 



Of course, everyone with a rock garden will want to grow the 

 Edelweiss and, fortunately, this can be readily accomplished by 

 anyone with a well-drained soil, plenty of limestone and an open 

 situation. If one has patience this interesting plant can be easily 

 raised from seed, but one must not expect any very remarkable 

 results the first year. 



Following is a list of easily grown rock plants additional to 

 those already mentioned : 



Alyssum saxatile (Gold Dust). Fls. golden yellow, i'. 



Anemone Pulsatilla (Pasque Flower). Violet fls. covered with 

 long silken hairs. 



Aquilegia caerulea (Rocky Mountain Columbine). Blue and 

 white fls. i' to 2'. 



Aquilegia canadensis. Scarlet fls. mixed with yellow, i' to 2'. 



Arabis albida fl. pi. Double white fls. 9". 



Armeria maritiina var. Laucheana. More brightly colored than 

 the common "Thrift." 



Aster alpinus. Bright purple, daisy-like flowers. 



Auhrietia, in var. Spreading prostrate plants. Colors rose, 

 lavender, etc. 



Campanula carpatica. Porcelain blue fls. erect on wiry stems, 9". 



Campanula garganica. Blue fls., dwarf, spreading by under- 

 ground stems. 4". 



Campanula pusilla. Pale blue fls. 4"-6". 



Cerastium tomentosum. Creeping species with gray foliage, fls. 

 white, 6". 



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