CELERY 



85 



room is not too warm or moist, will keep for a number 

 of months. 



Diseases. Against leaf-blight, spray with Bordeaux 

 when the plants are young; later with a weak solution 

 of ammoniacal copper carbonate every two weeks. For 

 leaf- spot, use healthy seed on healthy land and spray 

 early and regularly with Bordeaux. Against storage 

 diseases, store in a dry place. 



Pests are seldom bothersome. For the lettuce- and 

 other worms and for the celery-caterpillar, use insect 





Fig. 44. Celery stored for winter in a pit. The pit is roofed with boards 

 to keep out rain, and covered with hay against the cold. 



powders when the dew is on. Hellebore and pyrethrum 

 are the safest to use. 



For flea-beetles, Bordeaux; tobacco in powder or 

 decoction. For the two tortrixes, pyrethrum and 

 water, sprayed forcibly. For aphis, kerosene emulsion 

 or tobacco water. For the little negro-bug, carbolic 

 acid, a teaspoon ful to two gallons of water, carbolic 



