NURSERY STOCK 



Nursery trees are particularly liable to attack by 

 the San Jose scale and others similar to it. The use 

 of the lime, salt and sulphur wash and fumigation 

 of dormant stock are the standard remedies. The 

 leaves of young apple trees are frequently rolled 

 together at the tips of the terminal twigs by a 

 greenish-yellow, slightly hairy worm about an inch 

 long. This is the Lesser Apple Leaf-roller. Its 

 life-history is as follows : The eggs are laid in spring 

 on the leaves of apple and other plants, the larvae soon 

 hatching to devour the foliage, some of w^hich they 

 roll into a protective covering. Here they feed for 

 about a month, when they pupate within the folded 

 leaves, and a week or so later emerge as small orange- 

 yellow moths ; these moths lay eggs for another brood 

 of larvae, the imagos from which appear in August, 

 being also of the same orange color. These in turn 

 lay eggs for a third brood of worms, which emerge 

 during October as glistening reddish-gray moths, 

 which pass the winter in rubbish heaps and fence 

 corners and deposit eggs the following spring. 



One often finds during winter, upon the twigs of 

 nursery trees, masses of dry brown leaves, which, when 

 pulled apart, are seen to surround a long, tubular, 

 horn-like case. These cases contain a brownish worm 

 or caterpillar, about half an inch long. This is the 

 Leaf-crumpler, and it often becomes one of the most 

 injurious of nursery pests. The parent is a small 

 grayish moth (d) that deposits its eggs during June 

 and July on apple, quince and other trees. These eggs 

 soon hatch into small brownish worms that construct 

 tubular, sjlk|^ cases (a) wnthin which they remain 

 



