Are you interested in mushroom cultivation on coffee grounds? Then you have found like minded spirits! 🙂 We grow mushrooms on coffee grounds in an abandoned water park in Rotterdam. We can help you convert ‘waste’ into profit.

We have helped more then 30 entrepreneurs set up a farm for mushroom cultivation in their community.

We have over 4 years of experience on cultivating mushrooms on coffee ‘waste’.

What our Alumni say

Sevan Holemans

Our team took part in the “Mushroom Master Program” training offered by RotterZwam. I must say that this step was a cornerstone in the creation of our own mushroom project in Brussels. Siemen and Mark were very inspiring for us and together with the help of Nathan we have learned so much and so fast! Today, as our project evolves, we often go back to our notes to see how to improve our facilities and do it in an ecological and DIY way! I therefore highly recommend them for their knowledge and generosity!

Sevan Holemans
Le Champignon de Bruxelles
Florian Hofer

When I had the chance to get to Rotterdam for an Master Program at RotterZwam I did not know what to expect and what information they would share with me and what I was allowed to ask. But those worries where blown away immediately by the way Siemen, Mark and Nathan shared all their valuable knowledge and information about how to successfully grow mushrooms. The strong believe in open source ideology and the blue economy and the way they shared everything was really inspiring and motivating.

Florian Hofer
Hut und Stiel
Jonathan Lagraviere

In the world of business most entrepreneurs don't want to share there information and secrets to success. In the beginning I feared the same would be the case here. I was happily surprised that @ RotterZwam that was not the case. They really want to help others to be as successful as possible in cultivating mushrooms on coffee waste. Their own experience, good or bad, they share with you so you can benefit from that knowledge. For me it was a surprise to see that it doesn't have to be large scale operation but that with a "DIY way" you can start this business. That makes it accessible for everybody! As they say at RotterZwam: Just do it!

Jonathan Lagraviere
Rob Hermans

If you want to start your own mushroom farm, this Master Program is a really good thing to start with. The people of RotterZwam have a great knowledge that will give you an advantage of 8 months development. Only the fine tuning in your own environment is something you need to do by your own. For me this week was a great experience, they taught me everything I need to know and answered all the questions I asked. This week gave me a lot of positive energy to start my own business.

Rob Hermans
Zwamburg