STOCKS FOR CITRUS TREES. 217 



out that on light, well-drained soils, trees worked on this 

 stock make a good growth and develop into shapely, sym- 

 metrical trees. The growth of trees on sweet stock is 

 more rapid than on sour or trifoliate orange and in gen- 

 eral it m^y be said that in rapidity of development, it is 

 surpassed as a stock only by the rough lemon and pomelo. 

 When frozen back, sweet stocks sprout readily and 

 seldom is it necessary to replace them. In some sections 

 it may be advisable to use sweet stock, but the planter 

 should never forget that it is susceptible to the attacks 

 of mal-di-goma, and should not use it without counting 

 the risk. In Florida its use as a stock has been discontin- 

 ued almost entirely, but in California, Australia and 

 other districts, it is still used. 



POMELO (C. DECUMANA). 



As already pointed out, the pomelo surpasses the 

 rough lemon in hardiness, but does not equal the sweet 

 orange. It is a strong, vigorous grower, and seedling pom- 

 elo trees throughout Florida have attained a size sur- 

 passed by no other species of citrus, and generally sur- 

 passing all others in the amount of fruit borne. 



Within the past few years, attention has been di- 

 rected towards its use as a stock, most of the citrus trees 

 on this stock being planted on the lower west coast reg- 

 ion of Florida. But outside of this region it has not been 

 used to any considerable extent and most of the plantings 

 in South Florida are still made on sour orange and rough 

 lemon stock. In southern California this stock appears 

 to be replacing the sweet orange stock to a very consider- 

 able extent and it appears to be superior to the latter. 

 As a stock for dry soils, it is surpassed by none, except- 

 ing the rough lemon, and if we are to judge by the behav- 



