502 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



varieties only require watering two or three times during the whole 

 winter ! 



Draughts. — These are one of the worst enemies to Pelargoniums, 

 and must be carefully guarded against. Draughts encourage the most 

 troublesome pest there is — aphis. 



Pests. — Aphis and thrip. For the former we fumigate with 

 nicotine and syringe with plain water; for the latter we sponge the 

 leaves with an insecticide, such as paraffin solution. 



[Since delivering the foregoing lecture, Mr. J. Hudson, V.M.H., 

 has most kindly sent me the following notes on the cultivation of 

 Scented and Cape Pelargoniums, the result of his long experience in 

 growing this class of plants: — Miss Troyte-Bullock's remarks upon 

 the soil induce me to say that I find finely-granulated lime to be 

 excellent; it assists in keeping the soil sweet and open. Firm potting 

 is most essential for the durability and healthy growth of the plants. 

 In the winter I find it much better to keep the soil quite on the dry 

 side in dealing with our large specimen plants ; and small plants require 

 a little more water in proportion ; but it is better to keep them resting 

 during the dull season of the year. It is a pity that no records are, 

 so far as I know, available as to the history of many of these most 

 interesting, if not showy, plants. When the present collection at 

 Wisley is arranged into something like order we may probably get to 

 know more about them — their needs, their uses, and their varied 

 characteristics. — M.O. T.-B.] 



