These fascinating plants continue to surprise us. They feed the craziest fantasies, delight children and excite the curiosity of grown-ups.
The main genuses are presented in two trays. For educational purposes, the plants are classified by their type of trap. We distinguish between:
- active traps.
Insects are captured by a rapid movement of the plant, as with the famous Venus fly-trap or dionaea. With the sundews or “grassettes vosgiennes”, which have sticky traps, there is no movement during the capture, but the plant then closes up around the unfortunate victim in order to digest it more effectively.
- passive traps.
They make no movement linked to capture or digestion. The plants attract their prey by scent, colour or nectar. Some work like fly paper, but most have a sophisticated funnel system that traps a variety of animals. You may see a few specimens of Pitcher plants, Heliamphoras, Darlingtonias and Nepenthes with their impressive urn-shaped traps.
The botanical garden collection greenhouses are also home to a large number of carnivorous plants – over 550 species – which are grown for scientific and conservation purposes.