68 MANUAL OF TROPICAL AND SUBTROPICAL FRUITS 



and value of new introductions, the reader is referred to the 

 annual reports of the California Avocado Association. In 1917 

 this organization issued Circular No. 1, "Avocado Varieties 

 Recommended for Planting in California," the suggestions con- 

 tained in which have done much to eliminate from considera- 

 tion numerous inferior sorts. The varieties recommended in 

 this circular are as follows, the arrangement being according 

 to season of ripening in California : 



Spring varieties 



Fuerte, Spinks, Blakeman, and Lyon 



Summer varieties 



Spinks, Blakeman, Lyon, Dickinson, and Taf t 



Fall varieties 



Taft, Dickinson, and Sharpless 



Winter varieties 

 Sharpless, Puebla, and Fuerte 



Several of these varieties may be superseded within a short 

 time by others which are now being tested in California. It 

 is not to be expected that the industry can settle down to 

 the cultivation of a few standard sorts until all of the 

 promising ones have been tested, and this may require several 

 years. 



In Florida, the only variety which was extensively planted 

 during the first fifteen years of the industry was Trapp. With 

 the introduction of the Guatemalans, however, the question 

 has become more complicated, and it will take some time to 

 determine by actual trial which members of this race are most 

 suitable for cultivation in different parts of the state. 



It is probable that varieties will be obtained which will 

 make it possible, both in California and Florida, to market 

 avocados in every month of the year. Indeed, it is almost 

 possible to do so at the present time. In other regions horti- 

 culturists should work toward this end by obtaining for trial 

 varieties ripening at different seasons. 



