NURSERY ROWS OF YOUNG FILBERT TREES, SET OUT ADJOINING 
FILBERT ORCHARD 
rieties, necessary for satisfactory bearing. Some 
varieties are more self-sterile than others, but most 
of them do better mixed than when grown alone. 
Very late blooming varieties will not fertilize 
the early blooming varieties and vice versa: In 
carrying out this idea, it is best to plant the varieties 
with all possible regularity. They would pollinize 
just as well if they were indiscriminately intermin- 
gled, but if it is desired to keep the varieties sepa- 
rate, difficulty would be encountered in the picking. 
