126 Bush-Fruits 



method demands more space for training the plants than 

 is needed for their maintenance. 



The tendency of dewberries to fail to set fruit altogether, 

 or to produce small and imperfect fruit, is a point which 

 should be taken into consideration when planting. There 

 is reason to believe that this is often due to a lack of proper 

 fertilization. .Whether this lack of fertilization comes 

 from insufficient pollen, or from lack of potency of the 

 pollen which reaches the stigma, is uncertain. Whatever 

 the cause, the lack is apparent, and the most feasible way 

 of overcoming it is by planting different kinds together. 

 It has been conclusively shown that the pollen of many 

 varieties of our larger fruits, notably pears and apples, 

 has not the power to properly fertilize the pistils of the 

 same variety. The same may be true of the dewberries. 

 At any rate, better results seem to have come from plant- 

 ing more than one kind together. Even blackberries 

 planted alongside have seemed to produce a favorable 

 effect in some cases. One instance is reported 1 where 

 dewberries blossomed full for several years, but produced 

 only a few imperfect berries. Later a block of blackberries 

 was planted beside them, and when these came into 

 bearing, the dewberries began fruiting, and continued 

 to do so regularly. This is an indication, though not proof, 

 that blackberry pollen may fertilize dewberries. 



TILLAGE 



Little need be said concerning the tillage of the dew- 

 berry. Some growers even advise letting the plants grow 

 1 Trans. 111. Hort. Soc., 1886, 382. 



