Hydroponically speaking, what are the easiest vegetables to grow in perlite and vermiculite?
Probably vermiculite, an insulating material used at one time. Not sure what it is made up of but I have been around it with no ill effects.
it sounds like a type of insulation i don't know if it's asbestos or not but if it a newer home i doubt it is there may be mold inside you walls also call your local building inspector have him look at it
It almost certainly is vermiculite and it just as certainly contains asbestos. It is a very dangerous material and should be isolated using EPA approved methods. You should avoid it like the plague. It was very likely mined by the W R Grace company in Libby, Mt. Grace is being sued by hundreds of Libby miners and their families who have been dying from mesothelioma caused by exposure to abestos laden vermiculite. I lived and worked around Libby, Mt. for 25 years. Three seconds is too long to be exposed to that stuff. Go to Libby, MT and watch the EPA people cleaning it up. They are all wearing protective suits and breathing equipment.
