Designed by the Association for the Promotion of Ecological Techniques (APTE) and carried out as an integration project, this innovative greenhouse is part of an environmental and sustainable approach.

Also named “passive solar greenhouse”, it is its components and its design that isolate it to reduce thermal losses. Thus, it stores solar energy during the day and restores it at night or during cloud sequences.

The natural convection of the air flows allows the outside air to enter through some openings along the edges of the greenhouse downwards and to escape over the entire length at the highest point of the greenhouse, which avoids overheating. For example, at night in winter, the temperature difference between indoor and outdoor can reach up to 20 ° in some areas of the greenhouse.  All this is automated system using thermal cylinders that do not consume energy.

The good insulation of the walls to the outside and the presence of an air gap in the roof polycarbonate sheets, keep the heat in the greenhouse.

The south wall is transparent (here in glass) so that the sun’s rays enter the greenhouse. To collect optimal sunlight and maximum solar energy, the inclination of this wall is 65 ° relative to the horizontal, almost perpendicular to the rays of the winter sun.

The north wall is the storage space, which keeps the crops cool. The entire north face of the greenhouse is composed of a strongly insulating wall. This has the effect of keeping the heat in the southern zone and conversely keeping fresh storage areas in the north requiring low temperatures. A cold room located here can divide the energy consumption by 3.

A rainwater collection and storage system is used to irrigate the plants. Beyond the interest of not wasting this natural resource collected by the roof, rainwater is the best irrigation water (neutral ph, not mineralized, no pollutants, no chlorine, no germs …). It is also well suited for organic treatments, spraying of manure and biodynamics.

The collection and the dynamic storage of rainwater ensures thermal storage by inertia of the heat during the day and restores it at night, during cold periods. The advantage of this technique is that it can adapts to the seasons. During warm periods when overheating must be avoided, the water stored during the winter is gradually used and / or emptied, so the containers do not heat the greenhouse in summer anymore.

During winter, blackout blinds let radiation that heats the water storage during the day, while in summer they shade it. This gives a better control of the temperature.

Benefits of the bioclimatic greenhouse :

– The production period is lengthened. (About + 1 month of precocity).
– The production of certain vegetables becomes possible in winter.
– Aromatic plants, vegetables and flowers are protected from freezing.
– It complies with the organic farming regulations, which regulates the heating of greenhouses

Continue the visit :

The bioclimatic greenhouse of the Grand Potager, Lauris


The bioclimatic greenhouse of the Grand Potager of the Domaine de Fontenille is an essential tool at the end of winter and the beginning of spring, to prepare the seedlings, protected from the last frosts. It saves several precious weeks … Read More

Preparation of the wooden elevated plots in the greenhouse of Le Grand Potager.


 The plots of the bioclimatic greenhouse of the Grand Potager have been cleaned and prepared in order to accommodate the winter seedlings. The turmeric plantations have thus been moved to make room for the mesclun seedlings which will benefit from … Read More

Spring has settled in the bioclimatic greenhouse


The bioclimatic greenhouse allowed us to be right on time to prepare all the seedlings that are now growing in the garden. There are still some zucchinis to prick out, and an incredible nasturtium which spent the winter in the … Read More

Flower hunt for Lauris school children at the Grand Potager


During a day at the Grand Potager, nursery classes from the Lauris school had the opportunity to be involved in a flower hunt. Near the bioclimatic green house and the aromatics spiral, a lot of flowers are present. The exercise … Read More

Nasturtiums are blooming after a winter in the greenhouse at the Grand Potager, Lauris, France


The nasturtiums spent the winter in the warmth of the bioclimatic greenhouse of the Grand Potager. Here they are in full bloom, declining several shades of yellow and orange… Pleasure for the eyes and for the palate, as these flowers … Read More

Winter is coming, the greenhouse is getting organized


The greenhouse of the Grand Potager du Domaine de Fontenille is a perfect shelter for plants sensitive to the cold, as winter approaches. Autumn seedlings are also growing, and will be transplanted soon in the garden for winter.

Seedling for the winter


Seedlings of salad and cabbage were put in place this fall in the greenhouse, to be replanted before winter in the garden.

Bioclimatic greenhouse explained by Sebastien Dutherage


Sebastien Dutherage, head of the Association for the Promotion of Ecological Techniques (APTE) presents the concept of a bioclimatic greenhouse made with the support of The Ivory Foundation on le Grand Potager de Fontenille in Lauris, in the South of … Read More

Autumn at Le Grand Potager


Autumn is mild, the gardening boards are still green with salads, cabbage, spinach. Soon, the bioclimatic greenhouse will take over for the production of the plants, to gain a few weeks on the season.  

The bioclimatic greenhouse


The bioclimatic greenhouse of the Grand Potager is ready for its first seedlings! Funded by The Ivory Foundation, this experimental greenhouse was designed with the expertise of the association APTE (promotion of eco-energies, ecoconstruction and ecological practices), and carried out … Read More

Designing a bioclimatic greenhouse


The greenhouse will be a major element of the “Grand Potager” of Fontenille. A greenhouse that combines a modern and luminous aesthetic with the innovative concepts of the bioclimatic greenhouse, using natural and local materials. The operating principles of this … Read More