How do you take care of a mint leaf plant is it an annual or a perennial how do you tell when it is dying what should you do with it over the winter how much do you water it?

Mint is a fast growing spreading plant, they like full sun or part shade, they will die back at the first frost but roots will live on to provide new growth in zones 5 thru 11, in zones 8 and southern from there it will be a perennial.

Keep plant moist, but do not allow water to sit, they like to be damp not wet.