40 ROCK AND WATER GARDENS 



sandy loam. D. integrifolium blooms in March, the 

 flowers a purplish-crimson. D. Meadia, with drooping 

 umbels of purple flowers, is another good kind. 



Draba. Whitlow Grass. Among small mosses and 

 in rock crevices a few plants of D. aizoides, with their 

 brilliant cushions of yellow flowers, are interesting 

 Alpines. 



Dracocephalum. Dragon's-head. Easily grown plants 

 of the Sage family. D. grandiflorum is covered in July 

 with dense clusters of rich blue flowers. Division or 

 seed. 



Erigeron. Fleabane. Though most of the family are 

 border plants, E. alpinum grandiflorum should be grown 

 in the rock garden. The mauve, daisy-like flowers are 

 produced very abundantly in late summer. Well drained 

 loam. 



Erinus. Wall Erinus. On bare rocky places the 

 racemes of lilac flowers and tufted foliage of E. alpinus 

 are most welcome. 



Geranium. Cranesbill. The two rock garden kinds 

 are G. argenteum and G. cinereum. Among the smallest 

 Alpines, the clusters of red flowers are charming. Seed. 



Helianthemum. Sun Rose. There are few more 

 beautiful rock plants than these dwarf trailing shrubs. 

 For mantling sunny ledges they are unequalled. They 

 are quite hardy and succeed in any sandy loam. From a 

 long list of varieties, we may choose H. pilosum, white : 

 H. grandiflorum, yellow : and H. roseum multiplex, 

 double pink. When in full bloom these flowers are of 

 exquisite beauty. 



Houstonia. Bluets. A grassy little plant, with 

 numerous dainty blue flowers on slender stems. A 

 sheltered corner with sandy soil should be afforded. 



Hutchinsia. H. alpina, a good white flowered Alpine 

 for association with the dwarfest plants. Sandy soil. 



Leontopodium. Edelweiss. The well known hoary- 



