378 The Principles of Vegetable - Gardening 



A. Stems neither self -blanching nor tinted with red. 

 AA. Stems not self -blanching, but more or less washed or tinted 



with red. 

 . Stems distinctly self -blanching. 



Celery is Apium graveolens of botanists. It belongs to the 

 Umbelliferse, together with carrot, parsley, parsnip. It is native 

 to Europe, Asia and Africa, and was in cultivation before the 

 Christian era. The long, thick, blanching leaf -stalks are a result 

 of domestication. *If careful attention is not given to selection or 

 "rogueing" in the seed-field, the varieties soon run down and 

 become green-stemmed, slender, stringy and worthless. 



On insects and diseases, consult: 



Mich. Bull. No 102. Insects injurious to celery. 



Leaf blight, Dept. Agric. Eept. 1886, pp. 117-120; N. J. 12th 



Kept. 1891, p. 250 ; Cornell Bull. 132, pp. 203 205; Ct. 21 



Kept., pp. 167-171. Cornell: Copper carbonate. Dip young 



plants in weak solution, and treat young growing plants at 



intervals of 2 weeks. Ct. : Sulfur dusted on. 



Leaf spot, N. Y Bull. 51 ; Cornell Bull. 132. N. Y. : Eeject dis- 

 eased seed. Treat with Bordeaux in seed bed; continue 

 with Bordeaux if attack is anticipated. 



Diseases in storage, Cornell Bull. 132. See p. 229 of this 

 book. 



Special celery literature: Consult the special books by Greiner, 

 Vaughan, Van Bochove, Hollister, Rawson, Stewart, Crider. 

 Roessle's "How to Cultivate Celery," 1860, long since out of print, 

 was the first American Book to be devoted wholly to a special 

 vegetable -garden crop. It is beautifully printed in large clear 

 type, and it has a colored frontispiece of "Rose Colored Celery." 

 Mr. Roessle had other similar handbooks in view, but none of them 

 seems to have been published. Greiner's is a general treatise. 

 Vaughan 's gives particular attention to methods employed about 

 Chicago; Van Bochove's to Kalamazoo methods; Hollister's to 

 large-area work in marsh lands ; Rawson's to the Boston methods; 

 Stewart's to methods in vogue in Southern Michigan. 



