The Exhibition Greenhouses

A white summer dress to keep the temperature down

In the spring, a special lime-based paint is applied to the greenhouse windows. This helps reflect part of the sun’s rays, lowering the temperature inside. In the fall, this layer is removed using a mild, environmentally friendly acid.

Lighting, courtesy of nature

Lighting in the exhibition greenhouses is natural year-round. Only a few lights are switched on at the end of the day, allowing visitors to enjoy the plants in a different light.

Irrigation, a simulated rainfall

Irrigation can be manual or automatic. In addition, the greenhouses that require higher and constant humidity levels are equipped with a misting system.

Interestingly, horticulturists take the orientation of the greenhouse into account when watering. Soils on the south side dry out faster than those on the north side.

Pest control

The Jardin botanique promotes early detection of pest and the improvement of cultivation practices. Natural predators are sometimes introduced into the greenhouses to keep pest populations low.

This integrated pest management strategy considerably reduces the use of pesticides.