Hydrangea is a flowering shrub native to the United States and Asia. The root is traditionally used as a tea, though it is also available in capsule and extract forms by some retailers.
 
Product Information
Origin: United States
Directions: To use as a tea, pour 1 cup boiling water over 1 tsp. of herb, cover and steep 3-5 minutes.
Botanical name: Hydrangea arborescens L.