Expanded Shale vs Perlite
I wonder whether to use expanded shale or perlite to mixed with my organic potted mix. I'm growing Hydrangeas in pots that receive direct sun from sun up till about noon. I'm also getting Air-Pots for my hydrangeas. Does anyone have experience with it? I see lots of cannabis growers using them Air-Pots in there greenhouses environments. I might as well getting Root Pouch which is fabric pots. Not sure which is better.