PRUNING FLOWERING TREES 29 



Neillia. — Thin out every year after flowering is 

 past, cutting back the old wood to strong young 

 shoots. 



Neviusia. — This requires the same pruning as 

 Neillia. 



NOTOSPARTIUM. — Requires no pruning. 



NuTTALLiA. — The single species of this flowers in 

 February, and is improved by a good thinning out of 

 the old wood when blooming is past. 



Olearia. — Requires no pruning. 



Ononis. — O. rotundifoKus should be cut down every 

 winter, as it flowers on the young wood. The re- 

 maining species flower on the older wood, and need 

 not be touched. 



OSMANTHUS. — These should not be pruned unless 

 a particular shape is desired, when the plants may be 

 clipped with a pair of shears in spring. 



OxYCOCCUS. — This is a small creeping genus allied 

 to Vaccinium, and requires no pruning. 



OxYDENDRON. — Remove seed-pods. 



Paliurus. — This attains the dimensions of a small 

 tree, and should be kept trimmed up for that purpose. 



Parrotia. — Thin out in spring after the flowers 

 are past. 



Paulownia. — Keep to a single stem to a height of 

 about 8 feet, and then allow it to branch. If used 

 for sub-tropical bedding, it should be cut down to the 

 ground every winter. 



Peraphyllum. — The solitary hardy species of this 

 should not be pruned or disturbed in any way if it 

 can be avoided. 



