Do any of you know if Copper sulphate is still on the market as I am finding it rather hard to get a hold of this year and if it is where have you seen selling it?
It was withdrawn from sale for garden use in November 2011. Here's a link to the RHS advice on which chemicals are now illegal, and includes available alternatives:
RHS fact sheet (march 2013) on garden fungicides:
This product used to be in children's chemistry sets when I was young and you could make invisible ink with it!!!!!!!!