Pavel, the mass of the plant is about 6 inches, though several of the roots reach further down than that. It's about 3 inches wide, thought again, some of the roots reach further than that. When I stacked another piece of tree fern bark on it, I went out about an inch and a half on both sides and not much length on the vertical side of it. Hope that answers your question, if not just ask again and I'll do my best to answer you. Thanks

Phillip C