Since 2009, Colasse has been designing Vegeled LED lighting in Seraing, Belgium, for growth chambers, phytotrons, in vitro rooms and research greenhouses. Universities, research institutes, agri-science companies and seed breeders entrust us with the design, manufacture and commissioning of their lighting: custom spectra, uniform light and adjustable intensity.
We manufacture our own LED rails and can recreate almost any spectrum. Our full spectra, based on white and monochromatic LEDs, keep good colour rendering so that staff can work comfortably in the growing area.
The challenge in a growth chamber: the same intensity on every plant. We calculate the light distribution before manufacturing, then measure it on site with a spectrometer.
Our dual-phosphor white LEDs lose less than 10% of their flux after 36,000 hours (TM-21 test), with no significant spectral drift: your trial conditions stay the same from one year to the next.
All fixtures are dimmable: 0/1-10 V, DALI, a programmable dimmer with sunrise and sunset, or a WAGO controller to manage photoperiod, intensity and colours.
Vegeled EOS LED rails are made in our Seraing workshop, to the length and spectrum your project requires. Our floodlights are assembled by our partner to our specifications, with quality control in Belgium.
Four questions guide each of our lighting studies, whether for a growth chamber, an in vitro room or a research greenhouse.
Intensity is measured as PPFD (µmol/m²·s) at plant level. It depends on the species and the protocols: a few tens of µmol/m²·s are often enough for in vitro culture, whereas plant growth trials in chambers or greenhouses require several hundred µmol/m²·s.
A full spectrum based on white LEDs suits most trials and keeps good colour rendering for staff. Separately controlled far red and monochromatic LEDs make it possible to study flowering, elongation or the response to a specific colour.
On shelves close to the plants, LED rails at short distance provide uniform light over the whole growing area. In a greenhouse, floodlights are mounted higher: their layout is calculated to avoid darker zones at the edge of the benches.
LEDs radiate far less heat towards the plants than HPS lamps, which reduces the cooling load in growth chambers: at INRAE Versailles, cooling energy fell by 60 to 80%. Control (DALI, 0/1-10 V or a PLC) then sets the photoperiod, intensity and light recipes of each trial.
Full datasheets in the Vegeled 2025 catalogue. T1, N1, S1, W1, P1, M1 and A1 spectra, all of which can be supplemented with separately controlled far red; multispectral solutions on request.
Need a datasheet, a spectrum or a quote for one of these ranges?
Contact usOn site, we identify your intensity and spectrum requirements according to your crops and protocols, and we measure existing fixtures with a portable spectrometer.
We model the light distribution taking into account the room, heating, ventilation and staff comfort, then cost the solution and calculate its payback.
LED rails made in Seraing, installation by our teams or your installer, control set-up and commissioning, with verification measurements.
Our largest horticultural lighting clients:
Tell us about your crops, the area and the target intensities: we will propose a lighting study and a costed offer.
Request a studyFor growth chambers and phytotrons, we most often use Vegeled EOS LED rails, made to measure in Seraing up to 2 metres long. They provide uniform light at short or medium distance, come in several spectra and are dimmable (0/1-10 V or DALI). For very high uniformity at short distance, Asteria panels are an alternative.
Yes. All Vegeled fixtures are dimmable. Far red can be controlled on a separate channel, and our multispectral solutions, driven by a WAGO controller, let you create your own light recipes: photoperiod, intensity and spectral colours.
Vegeled Aurora G3 floodlights replace 400 W HPS lamps with around 30% energy savings and 10 to 20% more light. The Pandora Plus series replaces 400, 600 and 1,000 W HPS lamps with around 40% savings for the same amount of light.
Vegeled EOS LED rails are designed and made in our workshop in Seraing, Belgium. Our floodlights are assembled by our partner to specifications written by our teams, with quality control in Belgium.
Yes. Colasse equips research centres and growers in Belgium, France and worldwide, for example INRAE in Versailles, IRD in Montpellier and CEA Cadarache. We work in French, Dutch and English.
Colasse SA
Rue Puits-Marie 79
4100 Seraing, Belgium
VAT: BE0878226815
Colasse France SAS
1 Rue Louis Néel, Synergie Park
59260 Lezennes, France
VAT: FR47102937026 · RCS Lille Métropole 102 937 026
E-mail: info [at] colasse.be
Phone: +32 4 225 25 89
Colasse SA – Rue Puits Marie 79, 4100 Seraing, Belgium
