Actually, these so-called seeds usually are nothing more than unfertilized ovaries that failed to develop. They impart the resin-like flavor associated with figs. Plentiful sunlight is a key to maximizing fruit production. Choose an area that is in the sun most or all of the day. Otherwise, expect reduced performance from the trees.
Good drainage is a more important consideration than soil fertility.
Avoid soils and sites where water stands for more than 24 hours after a rain. In areas of poor drainage, roots receive insufficient oxygen and will die, resulting in stunted growth and eventual death of the tree. Fig Types Four distinct horticultural types of figs are described in this publication. This pollen is essential for fertilizing fruit of the Smyrna and San Pedro types. The pollen is transported from the Caprifig to the pollen-sterile types by a Blastophaga wasp.