Posted: 18/04/2012 at 11:45
The main dealers are getting their compost from one large bagging depot, it is collected from various area's where councils dump their green waste then put through a shredder and heaped up to heat up, being turned often to speed up the rotting down. The problem is much of the council green waste is brush or trees among stuff we gardeners do not put in our own compost bins, we know wood takes much longer to rot down as well as taking the nitrogen out of the compost. My own Council compost locally and we can get two free bags a week, take your own bags and bag your own. I find this more like normal compost but would not plant seed in it.
I mix my own seed compost with a loam base fine gravel and washed sand, a third of each, seeds will grow in sand but need some food as soon as they have two true leaves so then I pot on into half loam quarter fine grit and a quarter washed sand.
Loam in small quantities can be cleaned by steaming it, an old kettles with a bit of pipe into the base of an old bucket with a small quantity of loam in it. Or you can pour boiling water onto the loam. Just do not let H&S see you doing it.