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Mean annual diameter increment of ''Artocarpus'' trees (diverse species) over 10 cm in diameter at breast height is only 0.4-1.9 mm in primary forest in Sarawak. In selectively logged forest this value increases to 1.6-5.2 mm during the first 4 years after logging. Removal of relicts and further liberation thinning yields figures of up to 10.5 mm. For ''A. scortechinii'' in natural forest in Peninsular Malaysia a mean annual diameter increment of 1.2-1.6 cm has been recorded and for ''A. ovatus'' in natural forest on Mount Maquiling (Luzon) 1.8 cm for the diameter class 10-20 cm, which is very high for trees in natural forest.
Species restricted to the monsoon climate may be evergreen or deciduous. ''A. heterophyllus'' and ''A. altilis'' demonstrate the architectural growth model of Rauh determined by a monopodial trunk which grows rhythmically and so develops tiers of branches with flowers developing laterally. ''A. sepicanus'' represents the model of Roux characterized by a monopodial orthotropic trunk which shows continuous growth and with plagiotropic branches. ''A. integer'' also grows continuously and itis it is probably also a representative of Roux's model.
Annual flowering and fruiting of ''Artocarpus'' has been reported and flowering and fruiting may be more or less continuous for the major fruit-producing species, but it may be quite variable per region and per year. During 7 years of observations in Sarawak, ''A. kemando'' did not flower at all, ''A. anisophyllus'' flowered in one year only, ''A. odoratissimus'' in 3 years and ''A. integer'' in 4 years. For ''A. heterophyllus'' in India it is reported that alternate years have heavy bearing of fruits. Pollination is variable, by small flies and beetles attracted by the sweet scent, but is in other species probably by wind, given that the male flowers are scentless and give off clouds of pollen. Pollination by bats is very likely and may play an important role, as over 25% of guano samples from one bat species (''Eonycteris spelaea'') in Peninsular Malaysia contained pollen of ''Artocarpus'' species. Fruit dispersal is by arboreal mammals and fruit bats, but some of the smaller fruits may be eaten by birds. Fruits borne on the tree trunk may be eaten by herbivores such as elephants, or pigs.
