960 ARBORETUM ET FRUTICETUM BIUTANNICUM. 



gently moist, till the spring ; when most of the seeds will come up, though 

 some will remain in the ground till the second year. Their tardy germination 

 is owing to the thickness of the shell of the seed, which some cultivators 

 break before sowing, though at the risk of injuring the seed. The plants 

 which come up should be transplanted into small pots, after midsummer of 

 the same year, or, at all events, not later than the following spring ; and, for 

 two or three years, they should be kept during winter in a frame, quite close 

 to the glass. The plants are very tender for the first two or three years ; but 

 in the fourth and fifth years they will endure the open air, in the climates of 



