Hey permies, I'm toying with an idea here and hopefully some people can help by firing out some thoughts.
I saw a video from Ross Raddi about growing sugarcane in colder climates. If you want the link, here it is, start at around 4:30 to see what I mean here:
Anyway, something about the video caught my attention. Near the end of it, he mentions that he is growing figs and sugarcane right outside of philly (USDA zone 7 I believe), and he cuts them at the base and lays a tarp over them for the winter. Both of these plants can overwinter this way in cold climates, and grow vigorously enough that they can produce a harvest-able crop, even though they have very little lateral mass to start the year out with.
This leads me to believe that in colder climates, especially in close proximity to a house, one could greatly diversify their food supply by grouping up vigorous tropical and subtropical plants, cutting them near the base in the fall, and covering them with leaves and a tarp over the winter.
So as demonstrated by multiple people including Ross, I already know that figs and sugarcane can be grown in this manner. I hypothesize that papayas might work too, given their quick production and growth. Are there any other plants that can produce in this way?
Hopefully with this method, I can grow some of these tropicals and subtropicals in the ground rather than in pots, which tend to be more temperamental, need indoor winter storage space, more inputs, and attention.
Also, after many years of scrolling through this forum, and with google's search algorithms landing me nowhere with this idea, I have finally made an account here and posted my first thread, I am very excited to communicate with fellow permies.