Greenhouse Grow Lights for Supplemental & Year-Round Production
Greenhouse lighting serves two distinct purposes: supplemental lighting that tops up natural sunlight during low-light seasons or cloudy periods, and year-round production lighting that enables continuous cropping independent of day length and solar availability. The right lighting strategy depends on your crop, location, greenhouse construction, and production model.
Supplemental vs. Full-Cycle Greenhouse Lighting
Supplemental lighting adds photons on top of available natural sunlight, targeting a minimum daily light integral (DLI) that natural light alone can’t achieve during winter months. This approach is common in commercial greenhouse vegetable and herb production in northern climates — supplemental LED or HPS lighting runs during dark periods and cloudy days to maintain consistent DLI targets year-round. Full-cycle greenhouse lighting replaces natural light entirely — light-deprivation greenhouses and fully enclosed tunnel houses use the same lighting approaches as indoor grow rooms, requiring fixtures sized to meet crop DLI requirements without any solar contribution.
Greenhouse LED & HPS Fixtures
Hydrobuilder carries greenhouse-rated grow lights from Gavita, Growers Choice, Philips, and Iluminar — all qualified brands with commercial greenhouse production track records. Gavita and Philips GreenPower LED toplighting systems are widely deployed in professional greenhouse operations globally. HPS double-ended systems from DimLux, Gavita, and Iluminar remain in active commercial greenhouse use for facilities with established HID infrastructure. Use our PPFD & Light Coverage Calculator to size supplemental or full-cycle lighting for your greenhouse footprint and DLI targets.
Browse all LED grow lights and HPS and MH fixtures, or contact our commercial team for greenhouse lighting design assistance. Commercial accounts available.
