plant question

plant question

Hey all! I recently read about Mountain Mint, and I'm interested to know if Narrow Leaf Mountain Mint is as vigorous as regular mints, or is it more of a shrubby bush that's not going to take up half the garden. I'm really into herbs, and I saw a picture of it and it's so eye-catching! I'm just very wary of anything in the mentha family, as some are pretty invasive. It's supposedly zone 4, and would work for me where I live. Any help appreciated!
Problems with Peppers

Problems with Peppers

Garden pictures and questions

Garden pictures and questions

Some quick tips

Some quick tips

Stuffed animals

Stuffed animals

Flower Question

Flower Question

Peony Problem

Peony Problem