Great, thanks for your responses.
Sounds like the plasterers out there should be bagging their end of day sludge and selling it as fertiliser! ;-)
Bernard.
Hi,
Calling all knowledgable gardeners or plasterers!
I've got a rennovation project on and the plasterers have chucked their waste at the end of each day in the garden on the lawn. I think it's basically from cleaning their buckets out. There is now a big patch of plastery sludge...