La Fête des Jardins 2026 invests the garden of Îlot Riquet, in Paris's 19th arrondissement, on September 26 and 27. Freshly redesigned at the foot of the Orgues de Flandre, this green space will host repotting, plant creations, games, exhibitions, and meet-ups from 2:00 PM to 7:00 PM.