The cheapest way of forest restoration is through assisted and natural regeneration. The success of this can be affected by many factors such as climatic change that drives the frequency of flowering and hence abundance of fruits and seeds. Most of the time, only small numbers of the trees flower sporadically in any population. In the case of Philippine teak, almost every aging individual (8-27m high and up to 80cm in diameter) has been observed in mass flowering. This episode probably will not occur annually and therefore, efforts to preserve the young population of Philippine teak trees are recommended. Philippine teak has been highlighted since 1998 by the International Union for the Conservation of Nature (IUCN) for being vulnerable to extinction.
