CH. I.] ASPARAGUS. 23 



the buds, and the difcretion of the garden- 

 er, always determine this matter. 



In filling the firfl end of the pit a fecond 

 time with frelh roots, it will be unneceflary 

 to ftir up the tan, Sec. and perhaps may 

 be fo, even the third filling ; but, by keep- 

 ing a thermometer plunged in the bed, or 

 watch-fticks, this matter may be determi- 

 ned. At all events, there will not be a ne- 

 ceffity of adding frefh materials. I have 

 generally found, that trenching the bed to 

 _the depth of two feet, or fo, has anfwered 

 the purpofe for the whole feafon. 



If dung alone, or oak-leaves are ufed, let 

 the bed be turfed, and at leaft a foot of ve- 

 ry rotten tan or light mould be laid on, be- 

 fore the roots ate placed. This precau- 

 tion is unneceflary when tan only is ufed; 

 in which cafe, however, not more than an 

 eighth part of new tan mould be trenched 

 in. 



64 CHAP 



