This is the update of my previous post. my Nam Doc Mai trees (2 of them) both alive with new leaves about sprouting out. yay!! I put my final star to the review that I was holding back last time. it's a 5 star!!
ordered 2 on 06/09/2020 with 2 day shipping. received on 06/13/2020. both the new leaves showing moderate to severe distress and wrinkled. the dark green leaves looking good still. both were about 1' to 1.5' in hight. I watering them right away as instructed. the new leaves still struggling but not dead yet. the mature dark green leaves looking normal. I put it in partial sun area today (3rd day after received them). hope they both lives. I'll give an update few weeks/months later. holding one star back now depending on the lives of the tress. overall, it's good so far.
I received my Nam Doc Mai mango in late July 2018, it didn't seem to grow very much but a few weeks ago it put forth 3 bracts of blossoms! The plant is only about 1.5 feet tall so it seems unlikely that mangos will develop, but still, after only a year it is blooming. Some of the leaves have brown on the tips, but this is likely due to (my) user error. I recommend this tree, even for growing indoors in a cold climate.