CULTURAL DIRECTIONS 
301 
each head will help to accomplish this purpose. Such a 
plan is particularly desirable when prices are high. 
393. Returns. — Returns are extremely variable, rang- 
ing from $100 to $1,000 or even more an acre, $400 an 
acre being a highly satisfactory return. 
394. Insects and diseases. — The same as of cabbage. 
See paragraphs 363, 364, 365, 366, 367 and 368. 
FIG. 75. CAULIFLOWER PACKED FOR MARKET 
CELERIAC OR TURNIP-ROOTED CELERY (Apium 
graveolens, var. rapaceum). 
395. Culture. — This umbelliferous plant belongs to 
the celery species. The root is the edible part. It is 
used for flavoring, as a salad and for cooking, like other 
root crops. The roots vary in size from 2 to 4 inches. 
They may be stored during the winter under the same 
conditions as beets or turnips. This vegetable is of 
