In the town of Manali (India), cannabis grows everywhere, just like, well, weed!
Hemp is endemic in this region of the Himalayas foothills. However, the wild plants contain much less psychoactive substance than the cultivated varieties.
In this valley near Mèo Vac (Vietnam), Cannabis is endemic (indigenous), i.e. it grows naturally everywhere, wild, just like weed. It is not cultivated, it just grows as far as the eye can see, from the side of the road to the top of the hills.
Cannabis plant originates from central asia. You can find more information about Cannabis in this Wikipedia article.
Photos taken during a 7-week, 7000 Km motorcycle tour across parts of India (Delhi, Rajasthan, Ladakh, Kashmir, Jammu and more) in May-June 2009.