Picture posting is enabled for all :)
New to me too, not sure non-tropical N E Hampshire could deliver 9 months frost free conditions, but Johnnie -on-the -sunshine- coast; it could do well for you. Reasonably comprehensive info here:https://www.thespruce.com/how-to-grow-organic-jicama-2539640Note the remarks re: only eating sub- surface tubers.
I've grown Yacon, and was very impressed with the yield might have to try some more now I have more greenhouse space... very big plants as I remember.. and Jicama flowers are supposed to be a thing of beauty!
How do you use Yacon? I have grown some but realise that the tubers are still in storage as not sure what to do with them. Not enough for syrup although think I will do that if i get enough..