Hi C-H's, I took a vacation (can anyone guess where?) and have been off this list for a couple of months. Did I miss anything important? It looks more sensible than I remember! George Nelson wrote: " I guess it could not hurt anything to put broken up drywall in the garden and may even supplement calcium eventually, but there are quicker, more effective ways to do it. The best gypsum to use in the garden would be Terra Alba, which is the dihydrate." It would as George notes break down over time. I suspect that the main benefits would be from improving the soil texture rather than it's chemistry, but the paper outer layers might actually provide some humus. How about a C-H special growing medium made of composted wallboard, coffee grounds and chile seeds and skins? Alba is the old name for Scotland; so "Terra Alba" might be "Scottish Soil." It is true that Scots like to get plastered. Regards, Regards, Cameron.