Unlocking the Secrets to Perfect Plants: Ethephon's Power Unveiled
The quest for optimal plant growth and aesthetics has led researchers to an intriguing chemical compound. Ethephon, a plant growth regulator, has been put to the test in two studies, revealing its remarkable ability to control the destiny of plants in containers.
Taming the Stems of Perennials
In a groundbreaking study, scientists explored the potential of ethephon substrate drenches to manage stem elongation in container-bound herbaceous perennials. The findings were eye-opening: targeted applications proved to be the secret weapon for growers, enabling them to reign in plant height while maintaining overall plant vitality. This means growers can now cultivate uniform, retail-ready plants with ease.
But here's where it gets controversial—is it ethical to manipulate plant growth for aesthetic purposes? The study suggests that ethephon can be a powerful tool, but it also raises questions about the natural growth processes of plants.
Annual Bedding Plants: Compact and Captivating
A companion study delved into the impact of ethephon on annual bedding plants, and the results were equally impressive. By carefully applying ethephon substrate drenches, researchers discovered they could curb excessive growth, leading to more compact plants that are visually appealing. This discovery is a game-changer for growers aiming to optimize their greenhouse and nursery production methods.
And this is the part most people miss—the implications for sustainable practices. By reducing the need for labor-intensive pruning, ethephon applications can contribute to more efficient and environmentally friendly horticulture.
The Impact on Ornamental Horticulture
The research highlights the critical role of height and growth control in ornamental horticulture. By implementing the findings, growers can achieve several benefits: enhanced plant uniformity, reduced manual labor, and improved crop marketability. These advantages translate to more sustainable and lucrative business operations.
This innovative research was spearheaded by W. Tyler Rich, a research associate pursuing his Master's degree at The Ohio State University's Department of Horticulture and Crop Science. The study aimed to expand the applications of Collate® 2L (ethephon), which, as of May 2025, is the sole ethephon product approved by the EPA for substrate drenches and foliar sprays.
W. Garrett Owen, an extension specialist and assistant professor, brings expertise in sustainable greenhouse nursery systems to the table. His work focuses on floriculture crop production, plant nutrition, growth regulation, and diagnostics.
About the American Society for Horticultural Science
Founded over a century ago, the American Society for Horticultural Science (ASHS) is a renowned global authority in the field. ASHS is dedicated to fostering international interest and collaboration in horticultural research and education. With a diverse membership of scientists, educators, students, and industry professionals, ASHS is at the forefront of addressing the challenges and advancements in horticulture.
Explore the full research story on the ASHS HortScience journal website: https://doi.org/10.21273/HORTSCI18418-24 and https://doi.org/10.21273/HORTSCI18579-25.
This press release was edited for clarity and length. Mirage.News is not affiliated with the original organization or authors and does not endorse any views expressed.
Do you think ethephon applications are a step towards more sustainable horticulture, or do they raise concerns about interfering with natural plant growth? Share your thoughts below!
