io8 THE NEW GARDENING 



several years unprotected in the crevice of an almost 

 vertical wall, but the terrible April weather of 1911 

 killed it. The type, stellulatum, bears creamy flowers 

 in May. Album-roseum is well worth growing ; it opens 

 white and turns pink with age. The plant forms cushions 

 of grey leaves and is hardier and longer-lived than 

 Tauricum. Propagation by cuttings annually ; it is 

 best treated as a biennial. 



PAP AVER (POPPY). See Border Plants. The smaller 

 kinds, such as Alpinum and nudicaule (the Iceland 

 Poppy) and their varieties, are good for the rockery. 

 They come readily from seed. Ordinary soil. 



PAROCHJETUS COMMUNIS (SHAMROCK PEA). An 

 uncommon and pretty plant, of creeping habit, with 

 zoned leaves and blue flowers on 2-inch stems in summer ; 

 there is a large variety called major. The Shamrock 

 Pea is worth a place on the rockery, where it should be 

 sheltered with a square of glass in winter. Sandy loam 

 suits it. Propagation by division or cuttings in spring. 



PENTSTEMON. See Border Plants. Some of the 

 species, notably Lewisi, lavender, Menziesii, mauve, 

 and its variety Scouleri, also mauve, tubiflorus, white, 

 pubescens, lavender, Hartwegi, scarlet, caeruleus, blue, 

 and glaber, purplish blue, are suitable for the rockery, 

 where they bloom freely in summer. They grow from 

 a foot to eighteen inches high. The beautiful scarlet 

 'variety Newbury Gem is also good for the rockery. 

 Loam, with sand and peat, suits. Propagation by 

 cuttings late in summer. 



PHLOXES. The Alpine species and their varieties 

 are gems for the rock garden, and should be planted 

 freely. Divaricata (syn. Canadensis) and subulata 



