@Garcinia: I am sorry, I don't have the roseapple seed at the moment. The plant usually fruit during summer. If you still like some seed by then, I can send you some.
@Forumfool: The upgraded greenhouse was finished in the Fall this year. Therefore, it hasn't been through a summer yet. However, I planned to remove the roof so that the plants can expose to natural environment as much as possible.
Thanks all,
Tuan