588 THE GREEN-HOUSE [JUNE. 



are very subject to the attacks of the red spider ; for 

 which there is no other known remedy. 



They are also liable to be troubled with the 

 green fly and with the thrips ; for which a remedy 

 is to be found in fumigation, as often already no- 

 ticed. 



THE CONSERVATORY. 



Of the Admission of Air, Watering, $c. 

 There need be little added to the observations 

 made respecting this compartment last month, with 

 regard to airing and watering ; excepting that, as 

 hinted of the Green-house above, it may stand open 

 all night in fine weather ; shutting up, however, in 

 continued rains, that the borders may not be sur- 

 charged with moisture. At other times, observe the 

 directions for watering given in April and May ; 

 and also, with respect to the suppression of insects. 



Of training the climbing Plants. 

 These will now be growing vigorously, and ought 

 to be carefully dressed and trained as they advance 

 in growth, otherwise they will spread too far over 

 the lights, to the detriment of the plants in the pit 

 and borders. They should be kept to, or nearly to the 

 rafters, as hinted at in April ; should be trained to the 

 columns, in the centre of the house (see Section III. 

 on the construction of the Conservatory) ; should be 

 neatly, though not stiffly dressed to them, so as to 

 form festoons or wreaths ; or otherwise, as fancy 

 and taste shall better direct. 



