166 



MANUAL OF GARDENING 



it is generally used 

 for the protection 

 of half-hardy plants 

 that are grown in 

 pots and tubs. It 

 may be used, how- 

 ever, for the pur- 

 pose of forwarding 

 pot-plants early in 

 the spring and for 

 the protection of 

 peaches, grapes, 

 oranges, or other fruits in tubs or boxes. If it is desired 

 merely to protect the plants through the winter, it is best 



196. A pit or coldframe on permanent walls, and a 

 useful adjunct to a garden. The rear cover is 

 open (o). 



197. The usual form of coldframe. 



to have the structure on the north side of the building, in 

 order that the sun may not force the plants into activity. 



Another structure that may be used both to carry half-hardy 

 plants over winter and 

 for starting plants early 

 in spring is shown in Fig. 

 196. It is really a mini- 

 ature greenhouse without 

 heat. It is well adapted 



for mild climates. The 198. a strong and durable frame. 



