PRUNING FLOWERING TREES 21 



cut down every winter for the sake of its foliage. 



A. canescens should be cut down each spring to within 

 two or three eyes of the old wood, as it flowers best 

 on the young growth. 



Andromeda. — ^The only recognised species of this 

 genus is A. polifolia, which requires no pruning. 



Aralia. — These should be kept to a single stem 

 until they have attained a height of 6 to 8 feet, after 

 which they may be allowed to branch, or be still kept 

 to a single stem, as may be desired. 



Arbutus. — An evergreen genus which requires no 

 pruning. 



Aristolochia. — A genus of climbers which suc- 

 ceed best if the shoots are not allowed to become 

 too thick. The weakest should be cut away in 

 winter. 



Artemisia. — ^This genus is best known by its 

 common representative, the Southernwood, but this 

 and the other Artemisias should be cut down annually 

 in a young state. When older, an occasional thinning 

 out of the shoots in winter is sufficient. 



Baccharis. — Of this, B. halimifoUa flowers on the 

 young wood and should be cut back annually, while 



B. patagonica should not be pruned at all. 

 Berberis. — Properly the Berberis requires no 



pruning, but the stronger-growing species, such as 

 B. aristata, B. Lycium, B. virescens, B. vulgaris, &c., 

 require an occasional thinning to keep them within 

 bounds. 



Berchemia. — A climbing genus which requires no 

 pruning. 



