Queen managing director Frands Jepsen said: "The kalanchoes really benefit from the LED’s red light. We get two to three days faster rooting, which is 25% faster, all year round. We also see more side shoots and higher numbers of buds on each side shoot in the greenhouse."
Last year, Philips LED Partner Horticoop Scandinavia installed LED toplighting next to existing high-pressure sodium fixtures in the greenhouse.
In summer, the cool LED fixtures added light without increasing heat on the propagating plants, and in winter, Queen was able to increase light levels by 30%, resulting in year-round production benefits.
The kalanchoe producer has also been able to reduce resource costs with the LED toplighting as LEDs require less energy than HPS lights, particularly from late spring to early winter when electricity costs are highest.
Queen’s increase in production capacity and its ability to use longer growing days lead to faster time to market. The increased number of long days also means Queen has to spray the plants less with plant growth regulators.
Philips Lighting business leader horticulture Udo van Slooten added: "After global successes in bedding plants, roses and chrysanthemums, we have seen that LED lighting can also provide significant business benefits in kalanchoes and in the propagation of young plants."