Red Amaranth aka Lal Math, is great for growing outdoors. These sun loving plants, rich in iron can be consumed as microgreens for salads or harvest the leaves to make bhaji! It will readily self seed and keep spreading on it's own all through your garden. Amaranth des well in pots too! 
 
All the seeds by TOG are handpicked & are heirloom, you can keep collecting the seeds and keep growing!