Free movement is on the decline. The borders are being closed again. Even the garden centre has understood this: from gladiolus to geranium, from lavender to African lily, every plant now has a passport. Printed on the packaging: a flag, a name, a number and a country. But when does a plant travel? And why? The Keuringsdienst van Waarde does a thorough passport check, discovers that practically every plant is a world traveller and that no one knows where its roots actually lie.
