Fast draining, yet full of nutrients, this aroid potting mix is an excellent blend for your plants! This is a fast draining airy mix of pine bark, perlite(s) #4, vermiculite, & sphagnum moss. It's full of nutrients provided by rice husk biochar, lump bio char, mycorrhizae, worm castings, and organic fertilizer. Your tropical plants will love this soil mix. 1lb bag fills two 6inch pots and two 4 inch pots.