Norway Maple - Knowledgebase Question

rochester, Ne
Question by suzanne_craw
January 6, 2010
What plants are tolerant to the Norway Maples root toxins?

Answer from NGA
January 6, 2010


All trees are allelopathic to some extent, including Norway maple. Many university studies have targeted the question as to why plants won't grow well under the trees but none of the studies have come to the same conclusion. Too much shade? Competition for moisture and nutrients? Allelopathic chemicals? Or perhaps a combination of all three. It's true that Norway maples are more efficient at drinking up ground water than some other species so that's a big concern. With this in mind, I suggest the best candidates for planting under Norway maples are those plants that thrive under dry shade conditions. You might try berberis (the common barberry), Christmas fern, vinca minor, nandina, epimedium, aegopodium, liriope, ilex verticillata, azaleas, callicarpa, carex, sweet woodruff, erica, hemerocallis, heuchera and groundcovers such as vinca.

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