Commented: Kill me now - Root Mealies in GRITTY MIXI've had good luck with imidacloprid in the form of Bayer Tree & Shrub insecticide. I use it as a soil drench once/year. Used to have tons of mealy issues. Nothing now.
Commented: Scoria as potting mediumIf by scoria you mean crushed lava rock of the 1/4"-5/16" variety, my experience is that it has tons of dust and you have to wash it a lot to get it clean.
I'm not sure I'd resort to 100% la...
