Growing stevia is easy in well-drained beds or large containers, and the leaves can be dried for winter use like any other herb. Stevia grows best in warm conditions similar to those preferred by basil. Plants grown in warm climates will grow to 24 inches tall and wide. Where summers are cool, expect stevia plants to grow up to 16 inches. Grow three to five plants for a year’s supply of dried stevia leaves. source: Mother Earth News
I read powdered stevia works best when combined with other ingredients such as those used when baking.
The next experiment was to make a stevia liquid extract.
30 hours later
I poured off the liquid, draining through a strainer lined with a coffee filter.
and placed over very low heat
The bottle on the right was cooked for a shorter period of time and is lighter in color and less sweet.
I cooked the remaining liquid in the pot longer to produce a more concentrated and darker colored extract.
Homemade Liquid Stevia Extract