262 THE NURSERY. [MARCH, 



tious and profitable. They may be sown, either in November, 

 when ripe, or in March, first breaking the balls of seed, and sepa- 

 rating them effectually, mixing them with some dry earth or sand, 

 and then sowing them even on the surface of prepared four feet 

 wide beds, in the Nursery, and covering them about a quarter of 

 an inch deep, or a little better, if the earth is fine and light : too 

 dee/i covering is injurious to all kinds of seeds ; for nature never 

 designed more than a sufficiency to promote and give action to vege- 

 tation. They will come up the first season, and the next or suc- 

 ceeding year may be planted into nursery rows. 



The Liriodendron Tulifiifera, or Tulip-tree, commonly, but very 

 improperly, called poplar, is best propagated by seed, which should 

 be sown in November when ripe, or preserved in sand or earth till 

 March, and then sown, covering them half an inch deep. Those 

 sown in November will all grow the spring folio wing ; but, if kept out 

 of the ground, in a dry state, till spring, a great number of them 

 will not vegetate till the next year. 



The Celtis occidentalis, or Nettle-tree, is propagated by seed; 

 wMch, if sown in November when ripe, or preserved in earth or 

 sa .a till March, and then sown, will generally vegetate the same 

 season ; but, if the berries are kept dry till spring, the greater 

 number of them will not grow till the next year. They should b 

 covered about an inch deep. 



Maples. 



The Acer argenteum or silvery leaved, and Acer rubrum, or scar- 

 let maples, perfect their seeds in May, and should be sown imme- 

 diately after having been collected ; they will vegetate directly, and 

 produce fine plants the first season, if kept free from weeds. The 

 seeds of the former do not keep well till spring, but those of the 

 latter will. 



The Sugar, Canada, Ash-leaved, Pennsylvanian, and Mountain 

 maples, and also the Acer Pseudo-plat anus , or sycamore, may be sown 

 either in autumn or March, and will succeed well in either season : if 

 sown in autumn, cover them about three quarters of an inch deep ; 

 if in spring, half an inch will be sufficient. When about a foot high 

 in the seed beds, plant them early in spring into nursery rows, at 

 proper distances. 



Catalfia.) Sweet-gum, Pafiaw, and Persimmon. 



The Bignonia Catal/ia will grow freely from seed, which is to be 

 preserved in the siliques or pods till March, and then sown : or it 

 may be propagated either by layers or suckers. 



The Liquidamher Styraciflua^ or maple-leaved sweet-gum, grows 

 freely from seed sown early in spring. 



The Annona triloba, or common papaw, is a hardy plant, and may 

 be propagated by sowing the seeds about an inch deep, either in Oc- 

 tober, November^ or March. 



