IRISH GARDENING 



VOLUME XVI 



No. i8i 



Editor -J. W. Besant. 



A MONTHLY JOURNAL DEVOTED TO THE 



ADVANCEMENT OF HORTICULTURE AND 



ARBORICULTURE IN IRELAND 



MARCH 

 1921 



Rock Plants. 



NEW Yf?RK 



('(iflicnitica rilldsd is a lovely Himalayan Poppy- 

 wort, growing about 15 inches high, and bearing 

 yellow flowers over handsome, hairy foliage; it is 

 best suited in one of the smaller bogs at the base 

 of the rockwork. 



('iKumi'Iir'niiii (■(irioHuidnuin is an interesting 

 plant also for the small l)og, where the soil con- 

 ditions are moist, but not heavily saturated; the 

 flowers which are borne in slender, wand-like spikes 

 are white, produced in suniuier. The alpine Wall- 



the flat " a pane of glass in winter is essential. 



('Inijsanthemum argenteum is a more robust 

 plant 6 to 9 inches in height, forming a spread- 

 ing dwarf bush. The leaves are less silvery, but 

 still of a pleasing grey tone, contrasting well with 

 other green-leaved plants. The flowers, produced 

 in July, are white, Init not highly attractive, the 

 value of the plant being in its hoary foliage. 



Codonopsis ovata is a plant of the Campanula 

 family growing a))out a foot high, and bearing 



flower, ('helrnnfhuA uliiiinis^ is a really good 

 plant when well grown, li should be given free 

 exposure in soil not too rich, when it will prodiice 

 in abundance its clear, yellow flowers. The alpine 

 Wallflower is an excellent wall plant, and delights 

 in lime rubble. Seveial other wallflowers are good 

 ruck plants, such as Chciinnthxis MnrslinUii, ('. 

 iiiutdhilis, etc., and all should be given plenty 

 oT lime and sunshine. 



i'Jni/.sdiifhrmiirii (ilpiiiiini. a tiny dwaif "Mar- 

 guerite " with finely-dividfd .^ilvcry gr.y leaves 

 and solitary heads of white-rayed flowers, is a 

 delightful little alpine, hating too much winter 

 wet, and consequently rather difficult to keep. 

 The moraine, or a w^ell-drained ledge or crevice, 

 offers the best hope of success; if planted " on 



bell-shaped flowers of a pale slaty blue colour 

 witliout, and internally showing a beautiful com- 

 bination of orange and white. Ec|ually beauti- 

 ful is ('. orafd var. himnlyand of similar habit 

 but dwarfer. Both should be planted, if 

 possible, on a fairly elevated i)art of the rockery 

 and near enough the path to permit of an ex- 

 amination of the inside of the flowers. Among 

 the "Bindweeds " there are some well worthy of 

 inclusion among the choicest of plants, and one 

 of the very finest for a sunny, well-drained 

 ])osition of CanrDlruhia c(tnf(ibricii.'!, with rather 

 trailing shoots, clothed with narrow grey leaves, 

 and bearing in late summer delightful rosy pink 

 flowers. 

 ('. iindiius delights in gritty soil, and is indeed 



