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Gearing Up for Spring: Greenhouse
January 24 @ 1:00 pm – 2:30 pm EST

Presented by greenhouse experts
Kick off your 2023 growing season with a refresher on the must-have best management practices for successful greenhouse operations. Water quality, pesticides, planting techniques, and substrates are some of the most common greenhouse growing considerations – and the most difficult to master. Let us help you gear up for spring with a Back2Basics webinar on best management practices for greenhouse growing.
Topics include:
- Building greenhouse substrates
- Reading and understanding pesticide labels
- Water quality
- Proper planting for common ornamental crops
- And more!

Gladys Opiyo
Regional Sales Manager Northwest, Profile Products / HydraFiber
Since joining Profile Products in September 2017, Gladys Opiyo has worked directly with growers in all facets of growing with HydraFiber Advanced Substrate. She currently serving as Regional Sales Manager for the Northeast. She loves being out in the greenhouse working side by side with growers to transition seamlessly and successfully to this exciting new substrate.
Before joining the HydraFiber team, Gladys worked for several of the largest growers in the United States across a variety of crop types, and built her expertise in growing, propagation, production, field and greenhouse research and management. She holds a B.S. in Agronomic Engineering from EARTH University in Limón, Costa Rica and an M.S. in Horticulture and Crop Science from The Ohio State University.

Drew Jeffers
Horticulture and Natural Resources Agent, Clemson Extension
Drew Jeffers is a native of the mountains of eastern Tennessee. He has a B.S. in Agriculture: Plant and Soil Science and an M.S. in Plant and Soil Science from Tennessee and his thesis project focused on purchasing choices of woody tree and shrub liner buyers. Drew has worked as an herbaceous perennial grower for Berry Family of Nurseries, a production manager for Brussel’s Bonsai Nursery, a bedding plant grower for Van Wingerden International, and an Integrated Pest Management (IPM)coordinator for Costa Farms – Costa Carolina.
Drew currently works as the Horticultural Extension Agent in Spartanburg County, South Carolina, for Clemson University Cooperative Extension. He works with consumers, commercial landscapers, and commercial greenhouse/nursery producers on a wide variety of topics and issues. He is also seeking his doctoral degree from Clemson University, looking at Consumer and Commercial Plant Buyer Preferences for Woody Trees and Shrubs.

Dr. Byran Furhmann
Aquatic Technology Development Scientist, SePRO Corporation
Dr. Byran Furhmann is the aquatic technology development scientist at SePRO Corporation. He is also the president elect for the California Lake Management Society (CALMS) and a board member for the American Water Works Association (AWWA) Source Water Protection Committee. He is passionate about lake restoration and source water protection. He focuses on developing products to intercept nutrients in flowing water and sequester phosphorus in sediments.
Dr. Furhmann received his PhD in Environmental Systems where his research focused on how source water quality impacted the economics and carbon emissions of drinking water treatment. He also holds a BS in Chemistry, an MBA and an MS in Environmental Engineering Sciences. He has previously worked as an instructor at UC Merced in the Environmental Engineering Department and as the quality assurance manager at an environmental laboratory.

Dr. Bodie Pennisi
Professor & Statewide Extension Landscape Specialist, Department of Horticulture; University of Georgia
Dr. Bodie Pennisi is a professor and statewide extension landscape specialist in the Department of Horticulture at the University of Georgia. She received her Master of Science in 1996 and Doctoral degrees in 1999 from Environmental Horticulture Dept. of University of Florida in Gainesville. She joined the Horticulture Department at UGA in 2000.
Dr. Pennisi is responsible for planning and coordinating a statewide extension program to support the professional landscape industry and conducting applied research with emphasis on sustainable landscape practices such as biodegradable containers and microbial inoculants. Dr. Pennisi also conducts research on quantifying and qualifying floral provisioning resources for pollinators, biological enemies, and ecosystem services in urban and agricultural landscape contexts.
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