My next-door neighbour has a walnut tree planted right on the
property line. My failure to grow potatoes and tomatoes has
been attributed to a substance called juglone that emits from
the roots of walnut trees.
So this summer I'll try alternate crops. I've been assured
that carrots are okay, but can find nothing on beets, yams,
sweet potatoes, cabbage or any of various turnips. Various
squash thrive on the soil.
Would like to determine any method that will enable tomatoes
to grow.
Any advise is welcome.

Regards. RAF