I managed to pick up a bag of purple mangosteens (Garcinia mangostana) from a street seller in Chiapas and kept the seeds after devouring the fruit. After two weeks I have 6 of the 12 seeds I collected showing some sprouting. Pretty happy that I may get some companion plants to my two foot high Mangosteen.
However, I am curious if anyone has a suggestion for type of soil to add the germinating seeds to? Or should I just bung each of them in some HP Pro Mix with a little added worm humus and perlite?