Frank Vosselman

Managing Director

Patrick Hoogendoorn

Director Production & Planning

Maarten Vosselman

Manager Breeding


Please feel free to contact us if you want more information or advice on our products. Interested in visiting De Bolster? Professionals in organic seeds always get a warm welcome at our company. Please make an appointment in advance so we can assure you that a De Bolster professional is there to welcome you. 

Phone:  0031 (0)578 621433 

Monday till Friday 8.30 am till 17.00 pm (Amsterdam time) 

Fax:       0031 (0)578 621418


Annemarie Kruize

(International) Sales Manager

Monique Hoogendoorn

Controller & Export Documentation

Margreet van den Brink

Sales & Customer Service Representative