28 TREES AND SHRUBS 



GENISTA. G. linctoria flowers on the young wood, 

 and should be cut back every spring. The other 

 species of Genista should not be pruned, except to 

 keep them in shape. 



HALESIA. These are small trees or large shrubs, 

 and should not be shortened back, but are improved 

 if the growths are kept thinned out, which should be 

 done after the flowers are past. 



HALIMODENDRON. Requires no pruning. 



HAMAMELIS. Thin out regularly, as they are very 

 apt to get thick and make weakly growths. 



HEDYSARUM MULTIJUGUM. This flowers on the 

 young wood, and should be cut back lightly 

 each spring. The growths can also be pegged 

 down to improve the plant, which is apt to get 

 straggling. 



HELIANTHEMUM. Cut away all dead flowers and 

 seed-pods after blooming. 



HIBISCUS. Thin out in winter, but only shorten 

 the longest shoots. 



HYDRANGEA. These flower best on young wood, 

 and should be cut down in winter. H. paniculata 

 grandiflora should always be cut back to within two 

 inches of the old wood. 



HYPERICUM. These should be cut back fairly 

 hard in early spring, as they all flower on the 

 young growth. 



INDIGOFERA. Cut down every spring, as they 

 flower on the young wood. 



ITEA. Keep the growths thinned and cut away 

 all old wood. 



