BLACKBERRIES AND DEWBERRIES 185 



Enemies 

 Blackberries and dewberries are comparatively free 

 from insect and fungous enemies. Leaves and young 

 stems are sometimes attacked by the Orange Rust. 

 Whenever this occurs the affected plants should be 

 promptly dug up and burned, both to destroy the fungus 

 and to avoid propagating new plants from those which 

 are not resistant to the attacks of the parasite. The 

 Blackberry Cane-borer is sometimes troublesome in 

 neglected plantations, but it is readily kept in check if 

 the old canes are cut out and burned each summer as 

 soon as the fruiting season is over. 



