Ficus benjamina ' gensing ' roots ?
I have a few medium size Ficus benjamina ' gensing ' that have decent thick roots BUT I want to really get them big , plump and sexy . In Sept of this year I repotted all of them in a ten inch pot , they seem to have some room to grow . My question is this , how do I get those lovely roots big ? Do I grow them hard ? Do I had anything to the soil ? Food recommendations ? Anyone have any tips or experience with Ficus roots ?