Posted: 06/06/2013 at 17:49
The only thing I would add is that IF there was any residual weedkiller in the peat free compost then a. There would be screams from the gardeners who suffered and b. from the professional who are being forced into using it by the RHS who insist on it for any plants sold under their aegis.
I have only ever used the one kind and so far I have never seen any problems with my plants growing in it. Indeed I have more trouble with peat based stuff these days, that is full of rubbish and lumps and such like.