Would peppermint hurt other plants?

Yeah, it's definitely the peppermint. We grow it in our garden. It is so resilient, and that can be a bad thing.

Plants in the mint family send out runners to grow new stalks. If the runner has no space to grow, it will choke out the other plants that are crowding it. You cannot grow it near anything else. Ther is nothing you can do, except grow the petunias in another pot.

And on another note, don't EVER grow other herbs near it either. my mum had a herb garden one year, her first ever. She put oregano, parsley, basil . . . and mint. And soon enough, none of the herbs were usable, except for the mint. Why? Because everything took on the smell and flavor of the mint.

It's a great plant to have, but AWAY from other plants.

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it's no trouble about peppermint but the container can hurt petunias, petunias a special plant, u may be take a ultra violet lamp and dry machine as same as petunias habitat.

gbu

Mint is very invasive. I grow it in a big pot (about a foot in diameter). It grows tall and does not cover up other plants or send runners into their center because it is bound by the sides of the pot,.

having a peppermint plant in my garden, they do need their own space. they grow very tall and grab a lot of space. that's why they need to be alone. as I would say, they do not share their space with any other plants.