362 HORTICULTURAL MANUAL. 



than the Jtmeberry. Where a drooping or pendent growth 

 is desirable Forsythia suspensa is planted. It is equally 

 hardy and free in flowering. Indeed, in the West its flower- 

 buds are hardier than those of F. viridissima. 



350. Pearl Bush. This common name is given to Exo- 

 cliorda grandiflora and also to E. Alberti, which are closely 

 related species. Th'e latter species from Turkestan thrives 

 best in the prairie States, and in all parts, so far as known 

 to the writer, the Alberti is most vigorous in growth, has 

 darker foliage, and its pure white flowers show on longer 

 spikes than those of the grandiflora. By pruning it can 

 be kept in good shape, but it has most value when massed 

 with other shrubs, where its irregular habit adds to the 

 variety of expression. The grandiflora as yet is the com- 

 mon variety of the nurseries. 



351. Weigela Rosea. (Fig. 101.) This is the old gar- 

 den name of Diervilla, of which we now have many varieties. 

 Diervilla rosea is quite as valuable as any in the list. Its 

 fine rose-colored flowers hang in graceful clusters from the 

 axils of the leaves and end of the branches, and the foliage 

 is better than with most varieties if some of the old wood 

 is cut out at the close of the flowering period each season. 

 This keeps a supply of young growth that will flower freely. 

 If a white-flowered variety is wanted the Nivea is the best 

 we have tested. 



352. Red Dogwood ( Cornus sanguined). This is a hand- 

 some hardy shrub specially valuable for its winter expres- 

 sion when placed in contrast with low-trained Salix aurea 

 or a group of dwarf growing evergreens. 



The variegated leaved dogwood (Cornus Sibirica) also 

 has red-colored branches, and its leaves are finely variegated 

 with yellow, white, and green. It contrasts pleasingly with 

 dark-green- or purple-leaved shrubs. 



