Would putting coffee grounds in the soil of a mint plant help the plant grow faster? Or damage the plant?

If I put two teaspons of coffee grounds in the soil of a mint plant, will it help that plant grow faster or, just as importantly, hinder the plant from growing at a regular rate?

Would putting coffee grounds in the soil of a mint plant help the plant grow faster? Or damage the plant?
Probably help it because of acidity. When I was in high school many years ago I worked for a mint grower in southern Wisconsin. The fields were peat ("muck" in the US) which is very acidic.





Watch out where you grow the mint. If in a pot, OK. But if you put it in the wrong part of your garden it will spread very aggressively.
Reply:I'm sure it will not hurt the plant. Coffee grounds could actually help by increasing the organic matter content of the soil and act as a mulch to increase the moisture-holding properties of the soil. The caffeine may actually deter some insects from bothering your plant.