North American Fruit Explorers mailing list at ibiblio

[Nathan Rhora <nrhora@gmail.com>]

Paul,

Have noted your problem with the English walnut not setting fruit each year.
It is possible that the two trees (whether they be seedlings or grafted) do 
not
pollinate for many reasons.  It is possible that the two trees are
different varieties and do not bloom at the same time that the catkin
is dispersed from the trees.

Here in Ontario, we are a Zone 4, we have a crop every year because of
the inter cropping of different seedling walnut trees.  It would
surely help if you had other trees for cross pollination.

Hope this helps....

Charles Rhora
Rhora's Nut Farm & Nursery
website: http:/www.nuttrees.com
email: rhoras@nuttrees.com
Ph#: (905) 899-3508