WHAT GROWS UNDER WALNUT TREES - Knowledgebase Question

MARION, IA
Question by RVANGERPEN
December 2, 1997
WHAT GROWS NEAR OR UNDER A WALNUT TREE?


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Answer from NGA
December 2, 1997

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You apparently already know that walnut trees contain a substance in their roots (juglone) that inhibits growth of some other plants. Turf grasses, ferns, and many ornamental plants are not sensitive to juglone, but some vegetables, apples, birches, azaleas, and pines are likely to suffer if they come into contact with walnut roots.

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