Water-lilies and Other Aquatic Plants 



57 



success. In localities where the summer days and nights are hot, as in 

 St. Louis, Victorias can be grown successfully without artificial heat. In 

 altitudes where cool nights are experienced in summer, it is useless to 

 try to dispense with artificial heat. The only royal road to success with 

 Victoria regia is to grow it in an artificial pond where heat may be applied 

 during the early season. A temperature of eighty -five to ninety degrees 



Another view of the same pond 



must be maintained. By the end of June matured plants are in evidence, 

 which will withstand a lower temperature with impunity; but, as a rule, 

 we have warm weather during July and August, and the plants continue 

 growing and flowering. The end of June is about the right time to plant 

 Victoria rcgia without artificial heat, but it will be August before the 

 plants arrive at maturity, when the season 'is also well advanced. 



Victoria Trickeri succeeds best in a temperature ten degrees lower 



