90 THE PESTS OF THE RASPBERRY. 



Kansas. — Large, second early, handsome; very hardy and 

 productive. 



Palmer. — Berries of medium size, black, firm, good quality; 

 exceeding prolific, strong grower; early. 



PURPLE VARIETIES. 



Columbian. — Fruit very large, dark red, nearly purple, better, 

 than Shaifer; canes very rank growers and prolific. 



Gregg. — A late variety of large size, finer quality and with less 

 bloom than the last ; very productive but not as hardy as the other 

 varieties described. 



Shaffers. — A cross between the Red and Black-cap Raspberry; 

 fruit large, dark red and very acid; valuable for preserving ; very 

 vigorous and productive. 



Insects. — Few insects are destructive to tlie Ra"^i berry op 

 blackberry. The Root-Borer (yEgeria 

 rubi) Fig. 69, a being the male and b 

 the female, is a small, wasp-like moth, 

 resembling the peach-borer somewhat, 

 but smaller. The eggs are laid dur- 

 ing June and July, on the canes near 

 the ground. The egg hatches, and the 

 larva eats into the pith of the cane 

 and passes down into the root. Here 

 it continues feeding until the following 

 spring, when it comes up through the 

 center of another cane, where it un- 

 dergoes its changes and comes out the 

 perfect moth, as illustrated. The in- 

 jured canes generally are destroyed 

 early in the summer. 



Remedy. — The presence of the Root- 

 Borer is generally made known by the dying of the new canes 

 early in the summer, and the remedy is to cut until the worm is 

 found. 



A few other insects are sometimes injurious to the Raspberry 

 and blackberry, but not so much so as to warrant description in 

 so limited a work as this. 



Anthracnose, or Raspberry cane rust, is a fungus that is 

 quite troublesome in the North. It attacks the young canes 

 and foliage, causes a feeble growth and ultimately destroys 

 the plant. It is easily detected by the yellow color which it 

 gives to the parts attacked. All affected vines should be at 

 once pulled up and burned. 



