HARDY WALL SHRUBS 53 



back after blooming as the flowers come on the wood of 

 the previous year. Though it can be propagated from 

 seeds or cuttings, layering is the best method of increase. 



Choisya ternata is one of the most beautiful of all 

 white-flowered evergreen shrubs, and though the writer 

 prefers it in bush form, he is forced to confess that 

 it must be grown on a wall to induce it to grow properly 

 in all colder gardens and districts. It has ornamental 

 evergreen leaves and charming white, fragrant flowers. 

 It prefers a soil in which there is a liberal admixture 

 of peat and sand, a sunny exposure, and little pruning, 

 except to keep it in bounds. It can be increased by 

 ripened cuttings, struck in light soil under glass in 

 summer or spring. 



The Cistuses, or Rock Roses, are among the most 

 charming of our summer-flowering shrubs, though their 

 value is diminished by the fugaciousness of the blooms 

 of the greater number of the species and the tenderness 

 of many. They are frequently destroyed by late frosts, 

 just at the time when we have begun to congratulate 

 ourselves that summer is near and that all danger is 

 over. It is thus desirable to keep young plants, which 

 are easily raised from cuttings or seeds, in a frame as a 

 reserve in case of such losses. There is much confusion 

 in the nomenclature, and one must thus adopt the usual 

 garden names in this case, as authorities differ greatly. 



Almost any may be cultivated on south or west walls, 

 but I shall only name a few of the taller species, which 

 are more suitable for covering a little larger space than 

 the others. Ladaniferus, the Gum Cistus, is a fine 

 species with white flowers, and the variety maculatus 

 has a dark blood-red spot at the base of its white 

 petals. Latifolius and laurifolius have a yellowish spot 

 at the base of each of their white petals. The latter 

 is one of the hardiest, and the writer has a large plant 

 only sheltered from the north by a hedge, but other- 



