Grower groups – when well run – can transform soil management practices on large numbers of farms much more quickly and effectively than many other methods of knowledge exchange. More and more of them are appearing in the UK. But often they runout of steam – or funding – before they can have an impact. Drawing on experiences from both the UK and from Nuffield visits in Australia, South America, and Canada, this session explores what are the common factors behind the most successful grower groups worldwide, and what facilitators, farmers, and funders can learn.