Stevia Sweetie Star (Stevia Rebaudiana) - The leaves are 30 - 40 times sweeter than sugar cane, but with no calories or carbohydrates. The Stevia leaves can be applied directly into drinks or made into tea. The dried leaves can also be ground into powder and used in recipes that call for green Stevia powder. As far as we know this is the sweetest Stevia herb on the market, and it's grown from Stevia seeds.