168 THE BOOK OF VEGETABLES 



NASTURTIUM, TUBEROUS-ROOTED, is a tropical 

 or semi-tropical plant grown for its tubers, which in 

 South America are considered a delicacy. It is a perennial 

 plant treated as an annual, and in northern climates 

 propagated by its tubers. In South America the 

 people freeze the tubers after boiling them, by which 

 means the taste is considerably improved. They are 

 usually eaten with molasses. 



Soil. Warm and light. 



Distances. Hills three by three feet. 



Depth. One inch for seed ; for tubers, two or three 

 inches. 



Sow when frosts are past, four 'to five seeds to a hill. 



Thin to one plant. 



Dig when the vines are killed by frost. Keep frost 

 from the tubers, and 



Store in sand. 



NEW ZEALAND SPINACH. Sec Spinach, New 

 Zealand. 



NIGELLA SATIVA, or Love-in-a-Mist, or Fennel 

 Flower, is a hardy annual sometimes grown for its seeds, 

 used in seasoning. It does not transplant well. 



Soil. Light and warm. 



Distances. ROM'S one foot or more apart. 



Depth. About one inch. 



Sow when the ground is fit. 



