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    First 100%

    LED trial with roses


    excellent results and outstanding benefits
    excellent results and outstanding benefits

    Improvement Centre

    Bleiswijk, Netherlands

    Delphy develops, tests and demonstrates new cultivation concepts and technical installations. In one department of 1,000 m2 with diffuse glass, a three-year study was done within several projects, all with the goal of growing a perfect rose in an energy-efficient way.
    Rick van der Burg en Leontiene van Genuchten

    We can provide

    ample lighting

    and screening, and thus handle the installation in a smarter way."


    - Rick van der Burg, Cultivation Manager Delphy Improvement Centre

    Delphy Improvement Centre

    The challenge


    Rose growers in the Netherlands have to deal with stricter regulations concerning light emissions. Therefore, they must provide a total blackout from daylight for a large part of the lighting hours. HPS lamps emit more warmth than LED. If the temperature under the closed screens run up, then that has a negative influence on the quality of the roses. Cooler LEDs can solve that problem.

    Red Naomi

    The right lighting


    The first results of the study demonstrate that the combination of lighting with LEDs and the use of OPAC heat exchangers provide a beautiful, stable climate. With 100% LEDs, the quality of the roses in the period from July through September is even better than before.


    Rick said: "It seems that with LEDs we are, after all, able to obtain the desired amount of light intensity on dark, warm summer days. We can also screen more, or rather, handle the installation more intelligently."


    Furthermore, they provide the desired light intensity immediately after being switched on. This makes it possible to react more quickly to changing outdoor conditions. This has made the crop stronger. “You can also see it clearly on the buds, but also on the red color of the crop. The leaves are thick, almost leathery", says Rick.

    Philips GreenPower LED toplighting


    Philips is introducing an LED-based toplighting solution for greenhouse growers, easy to install and no need for water cooling systems.


    View product

      Stronger roses because of LED  





    Red Naomi


    Bleiswijk, The Netherlands


    Philips GreenPower LED toplighting


    Better climate control, increased quality, less energy usage

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