98 THE NEW GARDENING 



dividing Aubrietias. Fortunately this is to some extent 

 counterbalanced by the vigorous growth, and a few 

 plants go a long way. It is perhaps scarcely necessary 

 to add that the Aubrietias love a sunny spot and a rather 

 dry soil. Intense heat and extreme drought may check 

 the blooming, but are not likely to injure the plants. 

 After the principal flowering they may be clipped over, 

 and will soon break into fresh growth and present a 

 verdant, cheerful look throughout the summer. 



CALANDRINIA UMBELLATA. One wonders that 

 this beautiful plant is not grown more, for it gives a 

 profusion of violet flowers on stems six inches high in 

 summer ; and is in its season one of the most exquisite 

 plants which could be put on the rockery. It is also 

 suitable for growing in pans in a cool house. A biennial, 

 it may be flowered the first year by sowing seed in a warm 

 house or frame towards the end of winter, pricking-off, 

 hardening, and planting in the rockery early in June. 

 Allied to the Portulacas, it loves sunshine. 



CAMPANULAS. The dwarfer Bellflowers mentioned 

 in the chapter on border plants, such as the forms of 

 Carpathica, are good plants for the rockery. Profusion, 

 with its pale blue flowers, Garganica and its varieties 

 alba, hirsuta and hirsuta alba, Portenschlagiana (muralis), 

 a small-flowered but pretty blue species five or six inches 

 high, pulla with blue, and pulloides with larger purple 

 flowers, pusilla (pumila), blue and the white variety 

 alba, are all good rock Campanulas, growing only three 

 or four inches high, and blooming freely. Reuteriana, 

 with blue flowers an inch across, on stems nine inches 

 high, may be mentioned as a little-known and pretty 

 kind. The Campanulas are too well known to need 

 lengthyMescription, but it is worth noting that they are 



