Pomona College Journal of Economic Botany 



285 



duced from other countries will not necessarily be successful here — if from cli- 

 mates widely different from our own — without undergoing a process of accli- 

 matization. 



Propagation 



Although the majority of Cherimoyas in this state are seedlings, the tree can 

 be readily budded. It is only through this or some other asexual means of propa- 

 gation that desirable forms originated as chance seedlings can be perpetuated, 

 and Cherimoya culture on a commercial scale made profitable. 



Figure 125. Parent tree of the Mammillaris Cherimoya, at Altadena, California, on 

 the property now owned by A. C. Calkins. 



Seeds are sometimes obtainable in the fall, but more frequently during early 

 spring. If a glass-house or hot-bed is available they may be planted at any 

 time, but if no artificial heat can be supplied it is best to defer planting until the 

 advent of warm weather, usually in April or early in May. For germinating 

 the seeds an excellent medium is a mixture of two-thirds silver sand and one-third 

 old redwood sawdust ; lacking this, any light, well-drained soil can be used with 



