permaculture

[Steve Diver <steved@ipa.net>]

There is an agriculture experiment station bulletin -- 
either Univ of Missouri or West Virginia Univ -- that 
specifically addresses the species of plants that grow 
under and around eastern black walnut trees, with respect 
to tolerance to juglone, the walnut chemical that is 
allelopathic to certain other plants such as nightshades.

Missouri is home to the largest black walnut nut 
processor in the world. Eastern black walnut trees
grow all through the Ozarks of Missouri and Arkansas.

Goldenrods, fescue, ferns, and a bunch of other plants grow
around black walnut trees in a natural setting. 

"Something to Grow On", April 2001, an ornamental horticulture
newsletter from Auburn Univ, has an article on the walnut
tree. It provides a list of tolerant trees, shrubs,
groundcovers, and flowers tolerant of juglone..... and cites
the following agricultural experiment station bulletin
from WVU.... in 1951... the likely bulletin. 

http://www.ag.auburn.edu/hort/landscape/STGOapril2001.html

Brooks, M. G. 1951. Effect of black walnut trees and their products 
on other vegetation. Bulletin 347, West Virginia University, 
Agricultural Experiment Station, Morgantown, WV.

Regards,

Steve Diver