Stevia is a native plant found South and North America, it is a plant widely grown for it's naturally sweet leaves. Stevia sweetener is the extract from the leaves of the Stevia plant and can be up to 300 times the sweetness of Sugar. Stevia is the world's most popular natural sweetener because of is it's zero carbohydrate, zero-sugar benefits. As more and more families are made aware of the benfits of low sugar diets, natural sweeteners like Stevia that have virtually no effect on blood glucose levels are increasingly saught after.
Stevia Sweetener Taste
Over the years natural and artificial sweeteners that have entered the market have been criticised because of their bitter after taste. In most types of sweeteners, in order to maintain their sweet taste they must include very high concentrations. This is where Stevia is superior, Stevia has a natural taste up to 300 times that of Sugar so the concentration does not have to be as high, which is why it has won many awards for it's great taste and nutritional benefits.
You can read more about Stevia at WikiPedia.