How Greenhouse Growers are Benefiting from LED Lighting

There are so many uses for LED lights, but one you may not readily think of is the uses that greenhouse growers have found. It is commonly believed that the conventional high-pressure sodium (HPS) lights usually used are necessary because of the heat they provide to the greenhouses. But growers of all kinds are finding LED lights mixed in with the HPS lights give an ideal environment optimizing both lighting and heat.

Here’s an example. Marcel Lugt, co-owner of Lugt Lisianthus has discovered that using about 75% HPS lighting and 25% LED lighting over 14.5 acres provides the perfect balance of heat and light for the colorful Texas bluebell (also known as lisianthus) flowers he grows. To grow these beautiful bouquet flowers has always taken careful optimization of heat and light and this combination of lighting has made it easier to control.

In fact Lugt states a bonus benefit, “Where we used to be able to grow 5 flowers per branch, we are now at 15 flowers per branch. We have also been able to shorten the cultivation period to 8 weeks and have almost doubled the shelf life to 14 days.”

Tomato grower Den Berk Delice, co-owner of Luc Beirinx, describes how too much HPS heat can be detrimental to tomatoes. They have had success using a mix of HPS and LED. Another grower used the HPS/LED lighting approach and introduced another heat source from the bottom of the greenhouse. There were able to exert better control over the climate and lighting to grow incredible crops of tomatoes.

Photo credit: Image courtesy of Signify

And finally, a leading rose grower, Marjoland, added LEDs to their HPS lights so that they could boost light levels and retain the heat from HPS lights. This paid off with higher production and a more uniform quality of roses. Per general director Daniel van den Nouweland, “With the light spectrum of the LEDs especially designed for roses, we’re able to lower our energy consumption and at the same time deliver a more homogeneous quality of roses to our customers all year round.”

Photo credit: Image courtesy of Signify

There’s a lot of science in figuring out the best combination of LEDs to HPS lights. And there’s even customized spectral tuning recipes for the LEDs. This means basically that LEDs can be manipulated to mimic different parts of the color spectrum. Changes in this spectrum can impact plant growth causing different tastes, flavors, pigmentation, chlorophyll content, shape and flowering time. Knowing what’s best for the crop you’re growing can and has produced increases in product yields.

If you’d like more information on how to use LEDs in your industry, contact me at 844-277-0043 or email me at

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