Q. Is it possible to trim a ficus tree grown indoors to encourage thicker growth? Also, the leaves are turning yellow and falling, and the leaves are sticky. Are the sticky leaves caused by a ...

I have a question I hope you can help me with. I have a ficus tree in the house we've had for about four years. Even though we have vaulted ceilings, it is getting a bit out of hand. Can I prune it?