MISCELLANEOUS VEGETABLES 



367 



Fig. 129. Kohl-rabi at the Ohio State University. 



required for lettuce. If desired, special plants may be 

 grown in the open and transferred to the house in the fall. 

 The demand for mint is very limited. 



MUSTARD 



Mustard is grown under glass, to a limited extent, for 

 salad purposes and also for greens. Chinese, a broad- 

 leafed variety well adapted to greenhouse culture, will 

 make more herbage than any other variety. The most 

 economical use of space is to start the plants in flats and 

 transplant seedlings of large size into beds where the crop 

 is to be grown. The plants may be set 6 to 8 inches 

 apart. Mustard requires practically the same cultural 

 conditions as lettuce. 



ONION 



The onion is forced to some extent for commercial pur- 

 poses. It requires the same conditions of heat and mois- 

 ture as lettuce, though it is more hardy. Sets of any of 



