15. May 2026

For flora and fauna: gArtenreich promotes biodiversity For flora and fauna: gArtenreich promotes biodiversity

Start-up from the University of Bonn offers landscaping services to help preserve biodiversity

The start-up gArtenreich GmbH designs gardens and urban green spaces intended to support and promote local biodiversity. The idea came to the two founders, Anthony Janssen and Paul Brentrup, while they were studying agricultural sciences, nature conservation, and landscape ecology at the University of Bonn. Since its founding in 2025, gArtenreich has offered customized consulting and planning services for gardens and ecological land use areas designed to maintain nature conservation and biodiversity in these green spaces. In this interview, co-founder Paul Brentrup shares what motivated him to start the company and the experiences he has gained along the way.

The two founders of gArtenreich GmbH, Paul Brentrup and Anthony Janssen.
The two founders of gArtenreich GmbH, Paul Brentrup and Anthony Janssen. © gArtenreich GmbH
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How did you come up with the idea to start your start-up? Where did the inspiration come from?

gArtenreich: We’ve both wanted to be self-employed since we were teenagers. Through our experiences and work during college, we came up with the idea that we could have a positive impact on both nature and society by offering professional landscaping services as independent contractors.

What was the transition from college to starting your own business like?

gArtenreich: It was very exciting! With much less free time and more responsibility, we moved from theory to the hard realities of practice. I was even writing my master’s thesis at the same time during the founding phase, so in that sense, it was a kind of seamless transition.

What formative experiences did you gain from founding your company?

gArtenreich: Anything is possible; what matters is passion, hard work, and ambition. Taking this step together was the best decision ever. When you can bring a project like this to life with a very good friend as a business partner, it’s twice as much fun and half the work.

Biodiversity plays a major role for you. How did you come to focus on this?

gArtenreich: Biodiversity—or rather, the ongoing loss of it—is one of the main reasons we founded this start-up. That’s also where the name (g)Artenreich comes from. We want to bring biodiversity back to urban green spaces, whether in private gardens or public green areas. Through my master’s degree in Nature Conservation and Landscape Ecology, I learned how important it is to preserve biodiversity and how diverse the opportunities are for promoting it even in cities. In addition to designing gardens with species-rich plantings, we also offer our customers detailed advice on nature conservation and ways to promote biodiversity in their own gardens.

How did the University of Bonn and the Transfer Center enaCom support you?

gArtenreich: The most important support we received from the University of Bonn was the opportunity to pursue our studies, which provided us with ideas, knowledge, and networking opportunities. Additionally, through the Transfer Center enaCom, we received start-up consulting and support in the form of a grant, which was a huge help to us personally, especially during our first year of operation.

What advice would you give to others interested in starting a business?

gArtenreich: If you’re fully committed to your idea and firmly believe in its success, see it through! Take advantage of support services and funding opportunities, and research them in advance. And if you have the chance, don’t do it alone. It’s more fun and less work with two people (though “less” is still a lot!).

Click here to visit the website of gArtenreich

The two founders of gArtenreich at work on a garden design.
The two founders of gArtenreich at work on a garden design. © gArtenreich GmbH
A bug hotel is a great way to promote biodiversity in your own garden.
A bug hotel is a great way to promote biodiversity in your own garden. © gArtenreich GmbH
A sandarium is a great way to promote biodiversity in your own garden.
A sandarium is a great way to promote biodiversity in your own garden. © gArtenreich GmbH
gArtenreich doing landscape design
gArtenreich doing landscape design © gArtenreich GmbH
gArtenreich doing landscape design
gArtenreich doing landscape design © gArtenreich GmbH
gArtenreich designs gardens intended to promote biodiversity.
gArtenreich designs gardens intended to promote biodiversity. © gArtenreich GmbH

Whether you have a specific business idea or are completely new to the world of start-ups and entrepreneurship, the University of Bonn’s Transfer Center enaCom is the perfect place for you. We support students, researchers, staff, and alumni of the University.

www.uni-bonn.de/enacom

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