Learning Opportunity: Preventing Young Plant Purpling under LED Lighting
July 16, 2024 
Purple leaf discoloration resulting from phosphorus deficiency and cold growing | Brian Whipker
Plant leaves and cuttings can turn from a natural green to purple for a variety of reasons, including anthocyanin build-up and various nutrient deficiencies. However, another recent concern is young plants turning purple when grown under LED lighting. Do LED grow lights exacerbate an existing issue of plant purpling, or cause an entirely new one?
American Floral Endowment’s upcoming webinar on Tuesday, July 30, 2024, as part of its ongoing Grow Pro series, will cover this common phenomenon of the purple discoloration of plants when propagated under LED lighting. Covered topics of the webinar will include:
- Exploring anthocyanin accumulation, nutrient deficiencies, and environmental stressors
- Mitigating and managing purpling problems
- The reasons behind purple coloration
The featured speaker for “Preventing Undesirable Purple Coloration on Cuttings Propagated Under LEDs” is Dr. Roberto Lopez, Associate Professor and Controlled Environment/Floriculture Extension Specialist at the Department of Horticulture at Michigan State University. Lopez completed his Ph.D at Michigan State University and has previously worked as an Assistant and then Associate Professor at Purdue University in West Lafayette, IN.
Additionally, the webinar will be moderated by Dr. Haramrit Gill, an Environmental Horticulture Advisor at the University of California.
Willing participants can register for the webinar directly through Zoom or by visiting the Grow Pro Webinar series page on the AFE website, where information on future webinars in the series can be found. Recordings of all past Grow Pro webinars can also be found on the AFE’s YouTube channel.
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