Seeds are numerous and arranged in the cells surrounded by a slimy transparent mucilage. Seeds have wooly hairs. Secondary Metabolites Certain biochemical constituents namely alkaloids, coumarin and steroid have been isolated from different parts of the Bael tree. The seeds are recalcitrant and can not be stored for longer periods under normal storage conditions. Budding, patch or shield on seedling rootstocks in June or July gives very good success.
Air layering is also successful under humid tropical conditions.
In vitro propagation has also been standardized but it is not feasible commercially. Ecology Bael has capacity to adapt successfully to a wide range of habitat from arid, semiarid to mesophytic conditions. Training and Pruning Bael trees may be trained in modified central leader. Pruning is done twice in a year, once in May and other in August. The deficiency of nitrogen and zinc is common in Bael orchards and can be corrected by soil application or foliar spray.