The plant is a cruciferous root vegetable that grows in high elevations (above 12,000 feet) in the Andes mountain range. Specifically, Maca powder sually comes from Peru and Bolivia. The plant itself resembles a small turnip.
Route Map from St David, AZ to Sierra Vista, AZ. Optimal route map between St David, AZ and Sierra Vista, AZ. This route will be about 35 Miles. The driving route information(distance, estimated time, directions), flight route, traffic information and print the map features are placed on the top right corner of the map.
If via the desert route, you would go east out of Julian on the 78 towards Banner and Borrego Springs. Julian to Palm Desert by way of Santa Ysabel, Warner Springs, Sunshine Summit, Aguanga, Anza and La Quinta is 90 miles, and is listed as 2 hours but I think it will take longer than that. Much of it is winding roads. It's pretty scenic too, so you may want to make some stops.