ORNAMENTAL SHRUBS, VINES, AND HEDGE PLANTS. 193 



after a few years' growth it becomes irregular in outline. 

 To overcome this tendency some of the old wood should be 



FIG. 100. WEIGELA (Diervilla roseu\ 



cut out each year after flowering, which will result in the 

 growth of young vigorous shoots that will produce an 

 abundance of large flowers. 



VARIEGATED-LEAVED WEIGELA (TT. rosea, variegata). 

 The leaves of this variety are beautifully marked with 



