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LED Lights for
optimized growth
of salat/ lettuce

Light & Lettuce

Lettuce is a relatively fast-growing vegetable that is divided into four main types: crisphead (or iceberg), romaine, loose-leaf and butterhead. Loose-leaf lettuce has the shortest growth cycle of the varieties, while romaine, butterhead and especially crisphead requires more time until they are ready to harvest. Although there are some variations between the types, lettuce is generally a cool-weather crop which requires specific temperature conditions with moderate daytime temperatures and cool nights to prevent bolting. Let us guide you in your light choices for the variety of different lettuce.


Science and our validated tests report that lettuce thrives under moderate light conditions, with light intensities that varies depending on cultivar and photo period. The spectral composition has a significant impact on the development of lettuce, and a well-adapted spectrum is therefore of great importance for the quality of the final harvest. A full, white spectrum increases harvest compared to narrowband RB spectra, both in terms of leaf area, fresh weight, and dry weight. The different growth stages of the lettuce may benefit from temporal spectrum differentiation, and studies have shown that the initial light treatment influences final fresh weight of the plant significantly. Therefore, a full spectrum with an increased proportion of blue light that promotes compact plants, development of vigor roots and growth after transplantation is beneficial during the propagation phase. In the following production phase, a spectrum with higher red light content can favourably be introduced since red light in higher degree stimulates biomass accumulation and extension growth.


At the moment, we have a set of high efficiency spectra for lettuce, all based upon LED because light differentiation is needed. We have a long list of science back-up for your choice and own high level tests. All is clear, LED is superior to HPS and we have helped a large number of salat growers in the transformation. Spectrum differentiation is only possible with LED lighting and not with fixed spectrum HPS lighting. In addition to customized spectra, replacing HPS with LEDs have other advantages. Science and testing compared HPS and LED lighting for the cultivation of lettuce and concluded that a switch to LEDs can result in reduced water consumption by 15.27% and up to 76% energy savings for lighting, without compromising the yield. Even when total energy consumption was calculated and additional heat for the LED system to compensate for the loss of radiant heat from the HPS lamps was included, the energy savings for the LED system amounted to 10-25%. We are always close to our growers to determine the light spectra. We are true to our policy: all our decisions are for the long-run. We want to be your preferred supplier, now and in the future.

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Smart design and next gen LED-technology

Quality-assured products: We do not have any products that do not meet our requirements for quality, design, function and longevity. We use the foremore brands of LED chip to provide the most efficient and sustainable method available. We are proud to make a contribution to the environment together with you.