ASTER CABBAGE 311 



Aster. ASTER- WORM (Papaipema nitela). A small larva boring in 

 the stem of garden asters about the time they begin to flower, 

 causing the heads to droop. 



All infested stocks should be burned. Destroy by burning all 

 rank weeds, such as ragweed and cocklebur, before September. 

 Bean. BEAN-WEEVIL OR BEAN-BUG (Bruchus obiectus). Closely 

 resembles the pea-weevil, which see for description and remedies. 

 Holding over the seed will be of no value with this insect. 

 SEED-CORN MAGGOT. (Pegomya fusciceps). A maggot attacking 

 germinating seeds and roots of young plants. 



Treatment. Avoid stable manure ; practice crop rotation. In 

 the garden use sand moistened with kerosene around the plants 

 to keep the flies from laying the eggs. 



Birch. BRONZE BIRCH-BORER (Agrilus anxius). A slender, creamy 

 white grub, three-fourths inch in length when full grown, that 

 burrows under the bark of the white birch, ultimately killing the 

 tree. The eggs are laid during May and June by a slender, olive- 

 bronze beetle about one-half inch in length. 



Treatment. After a tree has become thoroughly infested, 

 nothing can be done to save it. As the first indication of the 

 presence of the borer is usually a dying- of the topmost branches, 

 such trees should be carefully examined, and if infested should 

 be cut down and burned before May 1, to prevent a spread of the 

 trouble to other trees. 



Blackberry. CANE-BORER. See under RASPBERRY, p. 330. 

 ROOT GALL-FLY. See under RASPBERRY. 

 SNOWY CRICKET. See under RASPBERRY. 



Cabbage. CABBAGE- WORM or CABBAGE-BUTTERFLY (Pontia rapce). 

 The green caterpillars hatch from eggs laid by the common white 

 butterfly. There are several broods every season. 



Treatment. If plants are not heading, spray with kerosene 

 emulsion or with paris green to which the sticker has been added. 

 If heading, apply hellebore. 

 FLEA-BEETLE. See FLEA-BEETLE, p. 303. 



COMMON CABBAGE-LOOPER (Autographa brassicce). A pale green 

 caterpillar, striped with lighter lines. Feeds on the leaves. 

 Treatment. Arsenicals applied to lower surface of leaves. 

 CABBAGE APHIS (Aphis brassicce). These small, mealy plant-lice 



