"BULLDOG" wrote:

I would like to start 5 or 6 grape vines on a couple of lots that has a
large walnut tree on the edge. Has anyone heard of trouble growing
grapes around walnuts? I know tomatoes will not grow in close proximity
to walnut trees.

In the USA wild grapes are resistant to Juglone (the poison in Walnut
trees) and cultivated grapes are susceptible. The toxic zone from a
mature tree occurs on average in a 50 to 60 foot radius from the trunk,
but can be up to 80 feet.

http://www.extension.umn.edu/project...s/h407blkwal-t
ox.html

http://www.ext.vt.edu/pubs/nursery/430-021/430-021.html

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