I finally have been able to get some Okinawan Sweet Potato cuttings to take root.
I planted the cuttings in the picture to the right about a month ago. Unlike my previous attempts (see this blog entry). These cuttings did not turn black and die.
Next year, I plan to do this for all my Okinawan Sweet Potato cuttings. Trying to get cuttings to survive on their own through winter just does not work.
I think there are two reasons for this. One, the weather has gotten noticeably warmer. Two, these cuttings were originally planted in small containers (see picture below) in late November.
I kept the containers indoors for most of the Winter. By the time I transplanted the plants into the large container, they had nice healthy roots.