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Mint plants invading #870418

Asked May 28, 2024, 12:48 PM EDT

Mint plants from my neighbor’s garden are invading my garden. Rhizomes come under the fence. I want to put an underground barricade on my side. How deep do I need to go to prevent them from growing under the barrier? Stephen Bird

Adams County Colorado

Expert Response

Hi Stephen, I couldn't find much info on CSU about Mint roots but I did find this from another Master Gardner program. Mint roots are rather shallow, based on this and other online content the roots grow about 5 inches deep. So, based on this I would say your barrier should be at least 5 inches. 

https://www.torontomastergardeners.ca/askagardener/growing-mint-in-a-pot-in-the-ground/

Adams County Master Gardener Replied June 01, 2024, 11:14 AM EDT
Thanks for your help. 

iXs,
       Stephen



Blame the typos on my iPhone.
 
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On Jun 1, 2024, at 9:14 AM, Ask Extension <<personal data hidden>> wrote:


The Question Asker Replied June 01, 2024, 7:20 PM EDT

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