If you have the patience for it, you can obtain a plant or two mailorder, or buy seed, or get access to a plant somewhere to collect seed and/or cuttings. Both start pretty easily. I had a small "plantation" of ten or twelve bushes when I lived in central GA. My goal was to have
enough to
feed my daily morning tea habit, and since you only pick the growing points, I figured I needed at least that many. I lost a few to summer droughts even two years after planting them out.....remember it is
native to proper monsoon climates with regular summer rain.