NORMAN TOWER GARDEN 23 



Achilleas are fully represented, and do extremely well, 

 forming tufts and carpets of (in many cases) silvery, highly 

 aromatic foliage. 



Alyssums and Aubrietias are also grown, most of the best 

 varieties of each being used to form masses of colour in suitable 

 places. 



Azalea procumbens is one of the rarer plants that is diffi- 

 cult to grow. Although a native of the British Isles, it is quite 

 unusual to find a plant of it in a garden. It forms a dense 

 carpet of dark green leaves tipped with red, and makes, with 

 its rose-pink flowers, an altogether desirable plant for a rock 

 garden. It should be given a northern exposure in peat, with 

 plenty of fine granite chippings and grit to ensure porosity 

 and rapid drainage, in order to keep the roots moist and cool. 



Several of the Androsaces are grown and do well, notably 

 lanuginosa and sarmentosa and variety Chumbyi, Lactea and 

 lactiflora are two beautiful white species, the latter being best 

 treated as a biennial. Foliosa and Laggeri with villosa form 

 a fairly representative collection of these beautiful subjects. 



Several of the Daphnes are planted about amongst the 

 rocks, in a soil composed of half peat and half loam, with 

 plenty of sand added. Some of the species are very slow in 

 growth, rupestris being a notable example in that respect, 

 though it is one of the most beautiful of them all. They are 

 all delightfully fragrant, and flowering early in the year as 

 some do, are much appreciated ; hyemalis generally flowers 

 first, with mezereon alba a good second. 



The Dianthus family is an important one in rock garden- 

 ing, and is well represented here, most of the better known 

 species being grown, as well as a number of the rarer kinds. 

 They are all beautiful, forming tufts, or hanging masses of (in 

 many cases) greyish foliage, with very fragrant flowers. D. 

 acaulis and subacaulis are two little gems, all too rarely met 

 with in rock gardens. Neglectus and variety compactus are 

 most beautiful ; while brevicaulis, frigidus, glacialis, nitidus, 

 pyridicola, and several others of these rare species are grown, 

 all of which are very charming in their minute beauty. 



