AbstractA growing number of businesses advertise their tree planting engagements even though it is generally outside their core business. Why do they do it? Where do they do it? With whom do they do it? How pervasive is this phenomenon? These are questions we sought to answer for three European countries: France, Switzerland and the United Kingdom. We selected all large corporations from those countries present on the Fortune 500 list of companies and analysed their reports and available documentation to see firstly whether they were engaged in tree planting and if yes, to answer the above questions. Our findings indicate that in the last 22 years, 98% of the large corporations from the three countries reviewed have carried out some tree planting activities, contributing to planting well over 500 million trees.