Just an FYI on cold tolerance.
i had bought mine as a 3gal from PIN over 2 years ago
i kept it around 10 to 12ft
i had to cut it back at least 5 times in 2 years
the bole was thicker than my thigh.
This year we had 26-27F temps
the ground was wet, saturated.
it killed my mangos, black sapote and other plants
worst freeze we had in 10yrs
i thought the Muntingia was dead, but, alas !!
it lives.
i just saw some small growth peeking out near the trunk.
last October
large tree at the top...