I was given two small starts of these plant identified only as Mountain Mint. I cannot ask the person who gifted me anything abut it. I was helping in a MG program and this was brought in for division. Also primrose.
After reading I put the primrose in a pot NOT in my garden.
The mountain mint, I cannot decide if it is invasive so should be regulated to a pot or planted in my garden. How invasive is this youngun. I dont need a thug in my front of the house sidewalk garden .😁🙋🏼‍♀️
Advice needed, please

Whether it would be invasive would depend on the particular variety. I myself am a Master Gardener and the chair of our plant sale, and have to vet all our plants offered for sale as to whether they are invasive or not. Mountain mint is a wild or native plant and their are several different varieties. One or two are clump forming, but several others multiply by underground stolens. If you don't know the variety, it would be best to treat it as invasive. You could plant it in a pot. These are good bee and butterfly plants.

Thank you. Last fall I planted bergamot and have reaped the wind. Luckily it is in my wild garden. I will keep the Mountain mint in a pot and pray clumps. I plant for butterflies and bees so this will be a happy addition to my yard. Thank you for taking the time to respond.

Your welcome! Despite their bad qualities, mountain mints are great for the bees and butterflies. Know what you mean about reaping the wind. I'm still digging out a very invasive coreopsis I planted two years ago!