A lot of gardens in temperate climate could benefit from having this tree vegetable. It is easy to grow and if well-placed (likes heat), it can grow several meters every year. Not a lot of plant nurseries have it, but some do. If you're in Denmark, you can get it from our nursery @blog after the summer break: https://rodoglund.dk/toon-toona-sinensis (we don't send plants, sorry).