POLLINATION OF 
FRUIT TREES 
All fruit varieties are classed as self-fruitful; parti- 
ally self-fruitful or self-unfruitful due to poor pollen. 
As a tule, if a specie is a good pollinator for one 
variety, it is a desirable cross for any other variety of 
the same fruit family. For instance, a Delicious makes 
an excellent pollinator planted with a McIntosh or other 
apple varieties. But, a specie of one family will never 
pollinate a specie of another family, such as an apple 
planted with a pear tree. 
The lack of cross-pollination in a self-sterile variety, 
results in the dropping off of the young fruit and in 
crop failure. Partial self-fruitful trees may cause fruit 
to remain on the tree for a longer period of time, or 
Dwarf Clapp’s Favorite Pear Tree, 5 Yr. Old, in blossom 
L7} 

