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I've never grown jicama, although it sounds familiar. I lived for 30+ years in South Florida (zone 10) and I think it grew there.
Here's a link to the Rare Fruit Council - Palm Beach Chapter. I purchased lots of tropical fruit trees from them during the years I lived in Palm Beach County.
I did some more research on growing jicama. I learned that most of the jicama available in the US was grown in Mexico. That's because Jicama needs nearly 9 months of warm weather to grow large roots. The only places in the US where that might be a possibility are southernmost CA, TX and FL. For the most part, it's considered "not feasible" for the US. It sounds like it would be too much trouble, so I'll just stick to my usual. Thanks for your comments.