I am in between Vietnam and the US a lot right now...and hoping to settle back in Hanoi soon, so of course thinking about which plants to try to grow there. I don't know what I'll be able to take back with me (customs) but I have a friend who was able to bring some cuttings of plants. So don't mind if I ask a lot of questions about which plants might/might not grow well in my conditions!
Hanoi has very high humidity all year-round. Average high temps in the summer are in the mid to upper 80s, sometimes in the 90s, and it rains quite a bit. In the winter, average highs are in the 60s, and lows are in the upper 40s and 50s with little rain but cloudy weather. So there is a distinct "winter."
How would Brugmansia do in these conditions? I think the winter weather would be beneficial, but not sure if it's too humid. Also, you don't see a lot of ultra tropical fruits being grown commercially in the north (mango, mangosteen), but I wonder if I'd have luck in small quantities. Anyone with similar conditions?