Hi! I have a garden inside my home, and this little tree grew in it. We suspect that is a plum, because we consume that, and because that when it was germinating, it lift a big shuck or peel. The place where it grew takes the sun from 11:00 to 14:00, and the plant is about 30 cm high! I will remove it from a bigger location where it can really grow, but i want to know what is for sure. Can you help me ?
I'm not certain exactly what it is, but I can tell you with 100% certainty that it's not a plum or a cajá (mombin). It reminds me more of Oleander.... But if it left behind a big peel, it could also be a really young mango.
It looks like Thevetia peruviana to me. See this link for more info. The plant has a number of medicinal uses and magico-religous applications. It is also highly toxic but widely planted as an ornamental. I've seen varieties with yellow and a sort of salmon colored flower. If it is T. peruviana, when you snap off a leaf the stem will exude a milky sap. Compare the leaves with leaf photos of T. peruviana online or in a book to verify.