The rotten mushrooms
The rotterzwam team consists of a group of enthusiasts who are fully committed to the transition to a circular society.
Most of our staff are employees, with a few on call. We also always have a few friendly volunteers and interns working at the nursery.
For some core activities we work together with partners.

Mark Slegers
Co-founder and director of rotterzwam.
As a consultant in the green economy, he discovered the shortcomings of our current economic system. As a biotechnologist with strategic insight, he now puts his experience into practice. By DOING, he inspires others and encourages them to make a difference too. Do or do not. There is no TRY.
mark@rotterzwam.nl

Florian de Deugd
Nursery Coordinator
Florian is a biology graduate and has been working for Rotterzwam since the end of 2022. He will tell you the Rotterzwam story with an organic tone.
florian@rotterzwam.nl

Hanna de Bruijn
Master binder - Plant enthusiast and photographer. She started out as a volunteer at Rotterzwam. With her "no nonsense, just action" mentality, she races through the nursery: caring for the mushrooms, colleagues, and volunteers. "A tongue as sharp as a knife, but a heart of tofu."
Loot_RotterdamStefanie Bolleboom
Administration
stefanie@rotterzwam.nl

Anne Visser
Sales, relationship management & product development
anne@rotterzwam.nl
Noa van den Boogaard
Marketing, communication & design
noa@rotterzwam.nl