Questions, Answers and Comments by Category
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Can someone tell me please: how close to old Juglans regia (common / English / Persian / Circassian walnut) trees can roses safely be planted? Are roses more or less sensitive to juglone than apple trees are? How long does the ground stay poisoned with juglone after a walnut tree is removed?
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If all the leaves are raked-up well in autumn most plants and the lawn will grow reasonably well near a walnut tree. What can retard a plant's growth is the dense shade the leaves cast rather than any poison they contain.
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