The bare-root pawpaw I planted last spring didn't break dormancy till early october, and I am doubtful it will survive the winter; The second one never broke dormancy. Next year I am going to try small trees that have leafed out a bit. Always looking for a good supplier. Bare root historically a failure for me... Not offered locally, though I discussed with one nurseryman about the possibility. It will be a huge success indeed if ever I coax a pawpaw to bear fruit :)
(Zone 6 in massachusetts)
Sorry you've had bad luck! When I researched, I found a nursery or two that consider themselves specialists and say they are successful with bare root plants. I can find that link again later and put it here.
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