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. Any comments will be appreciated. Thanks
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.
Cutting the walnut tree down won't necessarily make the area "safe" for juglone sensitive plants. The toxicity occurs when the roots of the black walnut come into contact with sensitive plants. Check this out for more info:
Himrod grape vine is tolerant of walnut toxicity. If that helps
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