542 The Green House, [Dec. 



In doing this, let the ground be laid up in ridges ; 

 the froll will thus have mere power to mellow, and 

 rain lefs opportunity to over-wet it: for the ridges will 

 not detain wet like ground laid perfedly flat. 



Propagate Trees and Shrubs, 



You may ftill continue to make layers and plant cut- 

 tings of hardy trees and ihrubs, and tranfplant fuckers, 

 and for the method of treating each. See the former 

 months, January and February,. 



The Green House. 



CONTINUE to take advantage of every ilne day, 

 when the weather is open, to admit frelh air to 

 the plants in the green-houfe ; for this, notwithllanding 

 the unfavourablenefs oi the feafon, is a very ncceflary 

 article for the benefit of the plants in general : if they 

 are kept too clofe, it will not only occafion the leaves of 

 the plants to change to a fickly colour, but alfo render 

 the plants very tender and weak ; and their leaves, by 

 that means, will alfo be very apt to drop. 



Therefore every day, when the weather is mild, and 

 the wind not fharp, let the windows be opened about 

 nine or ten o'clock in the morning, and ihut again 

 about three or four in the afternoon, or fooner, if the 

 air becomes too cold. 



But never omit giving a large fhare of frefh air every 

 funny day in mild weather. 



Note, It will not at this feafon be proper to allow the 

 green-houfe any frefh air in foggy or very wet days ; 

 at fuch times let the houfe be kept quite clofe. 



In fevere froft the windows muft never be open. 



In continued fevere froily weather great care mufl be 

 taken to fecure the door and windows of the green- 

 houfe in fuch a manner as the froft cannot enter that 

 way to affed the plants. 



Therefore, in the time of very fharp froft, the win- 

 dew-ftiutcers, if any, muft be ihut clofe every night ; 



and 



