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Companion Plants

Plumbago and Black Walnut

18 years ago

Does anyone know if plumbago can survive the toxicity of the black walnut tree when planted within the 50 foot drip line? I have a plumbago I would like to plant. There is a spot under the black walnut tree, but after much searching, I have found nothing on line about plumbago, in relation to the black walnut tree. Any help in this matter is greatly appreciated. Oh, and I have checked (I have it bookmarked) the Ohio State U website on the sensitive plants to black walnut.

Thank you!

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Comments (2)

marcy3459
17 years ago
I have the perennial plumbago which is hardy to Zone 6 and spreads like a groundcover planted under my black walnut trees. It has even survived and overtaken some competing wintercreeper vine!! And it blooms all summer long with petite beautiful bloom blues. I planted three, if I remember right, as an experiment and it's been a successful one. Now covers 2 feet out all around a 24-inch diameter black walnut.
bekcgarden
Original Author
17 years ago
Excellent! I planted the plumbago anyway. It seems to be just fine. Thank you :)
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