Botanical Overview Eucommia ulmoides, commonly referred to as Eucommia, hardy rubber tree, or Du Zhong, is the sole species of the Eucommiaceae family native to China and East Asia. The bark and leaves are primarily used in traditional medicine. Energetics Temperature: Neutral Moisture: Neutral Tastes: Bitter, Pungent Directionality: Ascending Tonicity: Tonifying Qi/Blood/Fluid: Qi and Blood…