The mission of the Organisation for Economic Co-operation and Development (OECD) is to promote policies that will improve the economic and social well-being of people around the world. The OECD provides a forum in which governments can work together to share experiences and seek solutions to common problems. OECD works with governments to understand what drives economic, social and environmental change, measuring productivity and global flows of trade and investment. The OECD website host a section specifically dedicated to standards for seeds, tractors, forest, fruit and vegetables and to its “Scheme for the Control of Forest Reproductive Material Moving in International Trade”. To date 25 participating countries implement the Scheme (including tropical countries which are developing their seed exchange for reforestation purposes). Seeds and plants are produced and officially controlled according to common harmonised procedures. The OECD Forest Seed and Plant Scheme defines three broad categories of forest reproductive material recognised for certification: Source-identified material (minimum standard); Material from selected stands located in well-delimited regions of provenance; Material from untested seed orchards which can produce seed of improved quality. All categories included, the participating countries approved to date 275 tree species eligible for OECD certification of reproductive material. A database of those species is available in this website.