Here's a video that shows them growing in full sun. Next time I grow them, I will plant them in full sun. They can take it.
https://www.youtube.com/watch?...
And here's a video showing you can also propagate them from rooted cuttings--- which I did not know-- and that there is a red stemmed variety of them, and that the red stemmed variety seems to be more vigorous. I am going to look for the red stemmed variety next time.
https://m.youtube.com/watch?v=...