There is a ground swell of interest amongst organisations in ‘going green’. The challenge for leaders is how to change habitual behaviour: their own and other people’s. While the arguments for going green may be compelling, they are not always sufficient to change behaviour. Without behaviour change organisations are in danger of creating a swath of ‘greenwash’ policies and little genuine green-minded behaviour. Leaders are more likely to be successful in achieving real change if they apply psychology, as well as issue directives.