From the Manufacturer:
We prepare our Helonias Extract from the rhizome of Chamaelirium luteum plants which are Custom Wildcrafted in their wild native habitat in the Appalachian Mountains.
To assure optimal extraction of Helonias' bioactive compounds, the rhizomes are hand-dug in late autumn, are carefully shade-dried, and are then thoroughly extracted.
Our Helonias is never fumigated or irradiated.