"john hamilton" wrote in message
...
Have just discovered some growmore in a plastic bag that has been hidden
away for years. It's very damp inside the bag and it has broken down into
blobs rather than granules.

Would it still have maintained its essential plant food qualities do you
think?
I can't say of the link below will answer you question, but have a look
at:-

http://www.wickes.co.uk/content/ebiz...shh/189483.pdf

A fair bit of reading.

Bill