FOLIAGE PLANTS IN POTS 



119 



the foliage then turning a sickly mottled colour. The remedy 

 is, frequent spraying with soapy water and afterwards with 

 clean water. Brown spots are sometimes caused by fungoid 



Fig. 51. — Begonia Rex. 



disease. They cannot, of course, be removed, but a very 

 weak solution of permanganate of potash will prevent their 

 spreading. 



Begonia Rex. — The many hybrids and varieties of this 

 species are grown not for their flowers, which are small, but 

 for their magnificent foliage, which is most strikingly marked 



