The Q&A Archives: Planting Under Walnut Trees

Question: What annuals, perennials, or ground covers will grow under walnut trees?

Answer: The plants most tolerant of the growth inhibiting juglone given off by walnut trees include: arborvitae, ctalpa, clematis, daphne, euonymous, junipers, rose of Sharon, biburnum, astilbe, bee balm, begonia, bellflower, Shasta daisy, daylily, chrysanthemum, coral bells, wild ginger, orange hawkweed, hollyhock, hosta, morning glory, pansy, phlox, marigold, primrose, stonecrop, tulip, violet, and zinnia.

Most vegetables of the nightshade family are extremely sensitive to juglone, as are narcissus, peony, petunia, columbine and lilac and should not be planted near walnut trees.

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