Mirabilis longiflora
Frank via pbs (Sun, 24 Jun 2018 11:25:15 PDT)

If the seed sowing goes well you may want to consider leaving a few outside. For at least the last five years mirabilis longiflora has overwintered on a sloped yet poorly draining(heavy loam) spot in the open garden. Winter lows here have been down to -10F, which appears to be too cold for the nearby Musa basjoo(which had been protected), yet I see Mirabilis sprouts up and growing.
Frank, NEPa zone 6a-ish
https://katob427.com/
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