Company profile

DHD General Manager: Dr. Dorothee Heimann-Detlefsen and Dr. Sebastian Heimann

DHD is a science-based consultancy with core competencies in the German and European regulatory affairs of agrochemicals, biopesticides, biocides, biostimulants, and fertilizers. Founded in 1995 as a one-person company, today DHD is an internationally established and well-connected consultancy.

Our company's services are designed to achieve optimum benefits for our clients. In order to attain high quality work, we adhere to the most recent regulatory requirements. Our highly qualified staff use scientific methods to create solutions for every conceivable type of problem. In our work context, economy, ecology and social responsibility are objectives of equal rank.

DHD offers expertise and resources for all steps of active substance approval, plant protection product / biopesticide authorization, biocide authorization, declaration of biostimulants and fertilizers, taskforce management, study monitoring, as well as risk assessment and modelling.

As a client, you may choose between full-service where DHD acts fully responsible on your behalf from the product development stage to registration, or in a modular way where we support you with single steps and services on your way to the market. We are excellently connected with other specialised consulting companies, contract institutes (CROs), and the regulatory agencies.

Our customer base ranges from small, one person businesses to medium-sized companies as well as large, international companies with European branches.

However, DHD is more than that.

We are fully aware of the conflict between the environment and agrochemicals. DHD helps clients to achieve their goals of bringing the most effective products to the market by supporting them at all stages of active substance approval and product authorization. But we also offer a hand to clients that are engaged in the growing area of biopesticides, biostimulants, and biofertilizers. We offer special pricing and help for small companies and “start-ups” that want to bring innovative and environmentally friendly products to the market – ask us!

DHD-Consulting has a stable core of highly motivated employees. We have a mixed staff of very experienced, established senior experts who have been with the company for 10 years or more as well as young scientists fresh from university who bring in new points of view and who profit from working with and being trained by our senior experts. We are proud to have very low employee turnover and our staff consists of experts from various scientific fields: biologists, chemists, pharmacists, toxicologists, agronomists, and horticultural experts, among others. Our expert staff has fluent or native speakers of English, French, Hungarian, Polish, and Spanish – this helps to keep a direct line to national authorities across Europe.

Not only do we promote the scientific quality of our staff – we also stay connected “to the soil”. Several of our scientists have agricultural backgrounds with family-owned farms or with vocational education. You will not only meet our experts at events in the fields of regulatory affairs, risk assessment, modelling, etc. – you will also find them in lively exchanges with farmers and technicians at agricultural and horticultural field events, e.g. the “DLG Feldtage” or events of the Chamber of Agriculture.


And even more.

We understand that our company is not only a place to work, but also a social centre that impacts the lives of our employees and their families.

These people are our capital, so we do as much as we can to keep them motivated and healthy. DHD offers flexible worktime models including home office solutions, contributes to day care costs, arranges in-house day care solutions in times of need, organizes team events like excursions, company runs and self-defence courses, arranges and subsidizes in-house and external sport and health programs, as well as offers company cars and bicycles.

As a medium-sized company, we are embedded in our neighbourhood. DHD offers a university scholarship for students of the social sciences, sponsors a health awareness program at a local primary school, and provides financial contributions to a local refugee home.

Not without reason is DHD-Consulting GmbH a 2019 and 2020 nominee for the "Grosser Preis des Mittelstandes” (great award of small business) of the Oskar Patzelt Stiftung!

Our clients profit from all of this too by working with a highly motivated and experienced staff.
DHD-Consulting GmbH –
challenge us!


History of DHD-Consulting



Founding of DHD-Consulting by Dr. Dorothee Heimann-Detlefsen in 1995. The office is located in her private house.


Dorothee's brother, the plant physiologist Dr. Sebastian Heimann, joins DHD-Consulting

2003 - 2008

Growth: further 6 scientific employees join DHD-Consulting


Office space is rented for the now 9 employees.


Change of the legal form GbR to GmbH, which now consists of the Managing Directors Dorothee and Sebastian and 10 employees.


DHD-Consulting moves to a new office building. The steady growth leads to 20 employees who could not find enough room in the old building anymore.


Implementation of an internal hierarchy: DHD-Consulting now consists of 35 employees in 4 specialized scientific teams and the administration.

2017 - 2018

Expansion into further office space in the same location and implementation of a specialized IT team: 40 employees.


DHD-Consulting consists of 44 people in total, including scientific employees, IT specialists, an administrative unit and the Managing Directors.


Implementation of Stephan Gessinger as successor (General Manger) of Dorothee. Celebration of our 25th anniversary.


Dorothee Heimann-Detlefsen left the company

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