398 VEGETABLE FORCING 



Fig. 139. A coldframe plat near Norfolk, Va. Note method of ventilating. 



spring lettuce when the" latter crop is well advanced. 

 After the lettuce is cut, all of the ground is devoted to 

 beans. Any of the bush or snap varieties may be used. 

 The wax-podded type is generally most popular. 



Beans as a commercial frame crop do not offer great 

 possibilities, though it is much better to grow them than 

 to have the frames idle. 



Beet. Though the beet as a frame crop is not generally 

 regarded as so profitable as the radish and lettuce, it is a 

 favorite crop with some growers. It is usually grown 

 without the employment of artificial heat. Sometimes 

 the seed is sown in the summer and the crop protected in 

 frames until Thanksgiving or later, if the climate is not 

 too severe. 



At Norfolk it is a common practice to sow from De- 

 cember 15 to January 15, and to protect the plants with 

 glass until about April 1, when the sash are transferred 

 to cucumber frames. The seedlings may be started in 

 separate beds and transplanted into the frames. The 

 early maturing varieties, such as Early Egyptian and 

 Early Model, are employed for forcing. See page 359 

 for additional notes. 



