The drumstick tree is native to India and other parts of Asia & Africa. A ride around any countryside in India will show you the abundance of these trees.
Our ancestors in India have consumed almost every part of Moringa tree including seeds pods (drumstick), leaves, fruits, seeds, and oil for thousands of years (except the roots).
In Indian cuisine, the drumstick is a highly well-known vegetable, especially in southern India. Moringa is one of the most nutrient dense plants.