I just dumped another handful of ficus leaves in a viv about 5 minutes ago. I've been using the leaves off of our large Ficus benjamanii for years without problems. I think Ed is right that Ficus sap does produce an irritating substance but if you collect only the leaves that yellow and drop off naturally, there really isn't any sap in them anyway. The leaves look great in vivs and make good cover for froglets.Dunner97074 said:Anyone ever use Ficus leaves for substate in their vivs? I brought my ficus in off the deck for the winter and it's dropping a bunch of leaves and wondered if they'd work in the tank?