This is a large patch on the east slope of the Ash Woods. While garlic mustard is more or less under control in most areas of the garden (we've been working at it for years!), this large population has grown over the last few years and really surprised us this year by the extent of its spread. We worked further up the slope and six of us managed to fill two very large garbage bags with garlic mustard. But we have a lot more to do yet.