430 FORCING DEPARTMENT. 



months. The pots should be placed in such a situa- 

 tion as to secure as much of sun and air as possible, 

 in order to strengthen the plants, and prevent their 

 being drawn up in a weak or sickly state, and ren- 

 dered unproductive. Frequent syringings will be 

 necessary over their foliage, in order to suppress the 

 thrips and red spider, which often make great havock 

 amongst the leaves, particularly the latter insect, 

 which is, however, easily destroyed by frequent 

 syringings, or by sprinkling a little sulphur on the 

 flues or pipes, when hot, which will effectually 

 eradicate this depredator for a time. The thrips 

 will require to be suppressed by fumigations of 

 tobacco ; but when the atmosphere of the Pinery is 

 kept in a humid state, these intruders are not so 

 troublesome as when a dry high temperature is kept 

 up. As soon as the plants appear in flower, they 

 should be bountifully supplied at the root with 

 water that has been well impregnated with animal 

 or pigeon dung, which will greatly invigorate their 

 growth, and prolong their bearing. 



