The following pictures, they will tell which species to choose for fastest growth, since inoculation is size dependent. The bigger the tree trunk within a given time, the earlier inculation can be carried on, that is the shorter time for harvest.
3 seedlings of species Crassna were planted when i made the puchased from nursery, however i found out they were Malaccensis. From my observation and knowledges, crassna growth ranks in between Sub integra and Malaccensis. This comparison does not represent quality of Agarwood to be harvested in due time.