Fête de la Lavande 2025: cruises on the Seine, pony rides and free workshops in the 78 region

The 23rd Lavender Festival returns to the SIAAP (Syndicat Interdépartemental pour l'Assainissement de l'Agglomération Parisienne) Seine aval on Saturday June 28, 2025. For the occasion, the largest wastewater treatment plant in the Paris region and Europe invites visitors to discover the vast fields of lavender on its site.

With family or friends, go lavender picking, take part in free workshops and discover the jobs and missions of the Ile-de-France's public sanitation service.

SIAAP has plenty more free events in store, open to all!

• To be read
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The Fête de la Lavande 2025 program:

• Cruises on the Seine (registration on site)
• Pony rides
• Climbing wall
• Educational activities on water, the environment and biodiversity
• Guided bus tours of the Seine Aval plant
• Games for young and old: trampoline, petanque, giant chess and a checkers games
• Activity stands for children and families

And also:
ECO-toilettes, first-aid post, guinguette, food-truck, small trains and tricycles to shuttle visitors between the Lavender Field and the Jardin de Paris. Rest areas on the banks of the Seine and in the Albert Marquet landscaped park, ideal for picnics or relaxing, and river shuttles to the Festival from Herblay (departure from Herblay: 10 a.m. to 6 p.m. / departure from Jardin de Paris: 10 a.m. to 6 p.m.).

Like an air of Provence in Paris region!

This test was conducted as part of a professional invitation. If your experience differs from ours, please let us know.