Indoor Gardening and Houseplants: New with guestion about Philodendron Selloum, 0 by baja220

baja220 wrote:
I have a P. Selloum that been living a slow death for about a year. Yesterday, I desided to try to save him. The potting soil he was in wouldn't take water. So I was gonna take some of potting medium away and replace it for a last ditch effort to save his life. I'm attaching pics of what I found. Maybe someone can tell me what this stuff is and if he has a chance. After digging in the roots and found what looks to be ground up concrete, I took all the medium away, washed the roots and repotted from a 14" pot to a 10" pot. If an 8" would have been tall enough, that would've probably worked better. Does anyone know what this stuff is and is there anything elso I should do????