The project " Young gardeners for mutual understanding" aims at encouraging the pupils and the professors of various countries of Europe (France, Great Britain, Poland, Spain, Italy, Romania and Bulgaria) to collaborate and to make sensitive them on sustainable development.Our partnership bases on the variety of our establishments (urban or rural schools, big or small schools). This partnership has to allow us to involve all the pupils of the partner establishments, including the pupils with specific needs so that no child stays out. All the girls and the boys will find their place and will participate in the respect for each and in the objective of promotion of the intercultural education, the fight against racism and xenophobia. We want to educate pupils to be future citizens full of cultural and civil values.This project allows to lead - scientific activities: form children researchers: observe, experiment, write exercise books of experience, drawings... use ICT to communicate with partners, produce reports, digital photography...- artistic activities: paintings, children's production from the nature (Land Art)...- linguistic activities: learn a foreign language, exchange with foreign speakers...Work on this subject with such different schools seems to us a good way of transforming mentalities, opening on the future, adopting new attitudes for the environmental protection and so going towards an economy of sustainable development.