Knowledgebase
Mint plants invading #870418
Asked May 28, 2024, 12:48 PM EDT
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/
On Jun 1, 2024, at 9:14 AM, Ask Extension <<personal data hidden>> wrote: