The Journées des Plantes, one of the largest gatherings of its kind, is held in a few days at the Parc du Château de Chantilly, in the Oise. From 22 to 24 May, almost 20,000 visitors are expected in this exceptional site, to discover the latest news presented by 200 exhibitors. A 2026 edition marked this year by an event: the inauguration of the brand new Jardin de la Peony.
The Journées des Plantes, one of the largest gatherings of its kind, is held in a few days at the Parc du Château de Chantilly, in the Oise. From 22 to 24 May, almost 20,000 visitors are expected in this exceptional site, to discover the latest news presented by 200 exhibitors. A 2026 edition marked this year by an event: the inauguration of the brand new Jardin de la Peony.