I should also state that when I put compost or shredded leaves into or onto my beds, I'll mix perlite in that as well. I've also found that when it ( the perlite ) is ' dirty' and wet, it's not so light as to blow off in a mild wind and only floats when deluged in a heavy downpour. In my opinion the only other option to keep my soil aerated is pea gravel, heavy and non floating, but, I and my truck are not up to hauling and unloading TONS, which it would amount to at 3+ yards, one truck load in my half ton.
Meaning to say one truckload ( 3+ yards or 22 bags )of perlite.
