@Mindy03
I grew stevia three years ago. I plucked it in a whisky barrel planter with some other stuff. I grew great and would have done better in the ground. It grew quite large and I gave it nothing special. Just watered it. Easy to grow. I harvested some of it but never used it because it gave me a massive headache and made my heart race after tasting it once.
Maybe sometime else has better info for you. This is just my experience with it.