Couch grass

[bluebell]

I was in a similar situation with an allotment taken on last May. Covered with couch grass. I used a good mulch but it still manages to come through to some extent. It is gradually getting less and less so I would say keep at it and you will eventually win. I have also found one of the worst sources to be the grass paths around the edges that give me a perminant battle to stop the couch sneeking in from the edge.