In ground it takes 3 years average for mine to survive winters without any added protection. Even when I get winter kill back, the new growth often is 4-6 feet of growth in one summer. And still produces fruit. My zone is warmer, and does give a longer season. Not sure about zone 6, I moved from a zone 5, you don't see figs in ohio. Those that do will be in pots.
Doug
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