Nature Festival 2026 in Saint-Germain-en-Laye: flower market, free workshops and guided walks

Want to add a splash of green to your weekend? In Saint-Germain-en-Laye, within the Yvelines (78), the Fête de la Nature is sparking a day as florid as it is festive, featuring a flower market, gardening workshops, an urban stroll and discoveries around biodiversity. A breath of fresh air that smells of spring and soil freshly repotted.

Fête de la Nature in Yvelines (78) 2025: activities and special offers on the programme
The Fête de la Nature returns to the Yvelines, from May 21 to 25, 2025. Discover the program of free events open to all! [Read more]

The samedi 23 mai 2026, the city shifts into chlorophyll mode with a free program designed for families, plant lovers and the curious eager to nurture their green side without stepping off the pavement. Head to the place du Marché-Neuf, transformed for the occasion into an open-air garden where you can hop from one stand to another.

• To be read
• This week's best bets in Paris and Île-de-France, May 18–24, 2026.
• Free museums in Paris and free monuments in Île-de-France: the top cultural deals

Nature Festival 2026 program in Saint-Germain-en-Laye:

• From 9am to 6pm – Flower sale
  Agrocampus, Aux Jolies fleurs and Les Serres de Ludivine bring out the petals and gardening know‑how to green balconies, terraces and gardens.
• From 9am to 6pm – Potting workshop and seed swap
  The Parks & Gardens teams invite young and old to get their hands dirty with a potting workshop, with which you can take home a small plant. The community seed library at the media library is also hosting a seed swap open to all. Suitable from age 4.
• From 2pm to 3pm and 3:30pm to 4:30pm – “Nature in the City” stroll
  A guided walk to observe the biodiversity quietly thriving in the heart of Saint-Germain-en-Laye. départ from the potting stand.
• From 3pm to 5pm – “Discovery of wickerwork” workshop
  With Le Temps des savoir-faire, weave plant fibers to make nesting boxes and baskets while learning about local plants.
• From 9am to 6:30pm – Flower market
  The traditional flower market returns with a selection of plants, flowers and perennials for all budding gardeners.

To the Plasterworks

• From 10 a.m. to 2 p.m.— Herding dogs training demonstration
  Terideal, a partner in ecopasture, will present a demonstration on how shepherd dogs work and how they drive a herd.

Between bouquets of flowers, hands-on soil-work workshops, and a green stroll, the Fête de la Nature à Saint-Germain-en-Laye is shaping up to be the freshest outing of the weekend in the Yvelines!