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Buckthorn #890239

Asked November 24, 2024, 4:31 PM EST

I have discovered buckthorn does not do well under my blackwalnuts. Can the state use this information to fight buckthorn.

Carver County Minnesota

Expert Response

Thank you for writing.
This property of Black Walnuts is well known. https://mortonarb.org/plant-and-protect/tree-plant-care/plant-care-resources/black-walnut-toxicity/
It helps the Walnut compete. https://gardenprofessors.com/allelopathy-helps-black-walnuts-compete/
Ironically, buckthorn also suppresses competitors by means of a different chemical. 
https://quod.lib.umich.edu/m/mbot/0497763.0042.201?rgn=main;view=fulltext

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