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Shackelford Series

These Zoom Meetings, designed for both consumers and green industry professions, are free with expenses defrayed due to the continued generosity of Charles and Linda Shackelford, former co-owners of TLC, Oklahoma City.



Registration Steps:

NOTE: Registration allows one to participate in all or selected sessions. 

*Traditional conferences will resume as conditions permit.

For speaker info and YouTube webinar link click + beside each monthly topic.

  • January 13, 2022: Invasion Pathways and Integrated Management of Invasive Aquatic Plants with Lyn Gettys, Associate Professor of Agronomy, Aquatic and Wetland Plant Science Extension Specialist, University of Florida, Ft. Lauderdale.

    Watch the segment!

    Florida’s tropical climate provides an ideal habitat for many introduced plant species. How invaders arrive in Florida is a topic that is rarely explored. This talk will describe the events that led to the introduction to Florida of several problematic weeds, including waterhyacinth [Pontederia (Eichhornia) crassipes], hydrilla (Hydrilla verticillata), crested floatingheart (Nymphoides cristata), and rotala (Rotala rotundifolia). Attendees will learn that the most effective strategy to reduce the introduction and spread of invasive species is through diligent monitoring and increased public awareness of the environmental damage caused by non-native invasive species to prevent introductions. When prevention fails, many introduced species need to be managed to preserve ecosystem health. IPM (integrated pest management) is the strategy of using “all the tools in the toolbox” to control invasive species. Dr. Gettys will outline the philosophy of IPM and discuss the four main types of management strategies that can be used in IPM programs in aquatic areas. She will also provide examples of how IPM can be used to manage the aquatic invaders highlighted in this talk.


    Dr. Lyn Gettys is an Associate Professor of Agronomy (Aquatic and Wetland Plant Science) and has been based at the University of Florida IFAS Fort Lauderdale Research and Education Center in Davie since 2012. Prior to that, she worked as a post-doctoral researcher and a research assistant scientist at the UF-IFAS Center for Aquatic and Invasive Plants in Gainesville. She holds a bachelor’s degree in horticulture from the University of Florida, a master’s degree in plant breeding from North Carolina State University and a Ph.D. in plant genetics from the University of Florida. Dr. Gettys’ research is focused on the biology and ecology of native and introduced aquatic and wetland plants and evaluation of control methods for managing invasive species. She coordinates the UF-IFAS Aquatic Weed Control Short Course, which draws over 400 attendees annually. She also has statewide Extension responsibilities for aquatic weed control, including serving as a speaker and provider of Continuing Education Units. Dr. Gettys has authored or co-authored over 240 publications, including more than 50 journal articles and 100 abstracts, and was lead editor for the 2nd, 3rd and 4th editions of the Aquatic Ecosystem Restoration Foundation’s Best Management Practices Manual.

  • February 17, 2022: Empowering Women Farmers with Farm Management Training in Turkey and Central America with Robin Brumfield, Professor and Specialist in Farm Management, Department of Agriculture, Food and Resource Economics, Rutgers, The State University of New Jersey, Brunswick.

    Watch the Segment!

    Bio: Robin G. Brumfield, Ph.D., is a Professor at Rutgers, the State University of New Jersey, and has been the Farm Management Extension Specialist at Rutgers since 1988. Dr. Brumfield has a knack for communicating complex material to practitioners and students, using tools like her Greenhouse Cost Accounting Program and To Market; To Market online workbook. She is internationally known for her work in horticultural economics, most recently through an EU funded project called Empowering Women Farmers with Agricultural Business Management Training in 5 languages to help small-holder women farmers better manage their businesses. She wrote the marketing and business management chapters for the internationally best-selling textbook, Greenhouse Operations and Management by Dr. Paul V. Nelson. Dr. Brumfield has been working to empower women farmers as leader of the award-winning New Jersey Annie’s Project and international Suzanne’s Project Teams which teach women farmers risk management skills.

  • March 10, 2022: Landscaping with Natives for Butterflies and Pollinators with Bill Farris, Grower and Consultant, Norman, Oklahoma.

    Speaker bio coming soon.

  • April 14, 2022: Gold in Our Midst: The Hidden Value of Our Parks and Special Places with Lenny Hughes, Landscape Architect and Vice President, Halff Associates, Inc., Richardson, Texas.

    Speaker bio coming soon.

  • May 12, 2022: Timelines to Market: Selecting Trees for Resilient Future Urban Forests with Nancy Buley, Honorary ASLA, Director of Communications, J. Frank Schmidt and Son Co., Boring, Oregon.

    Bio: Nancy Buley is Director of Communications for J. Fran k Schmidt & Son Co., wholesale tree growers of Boring, Oregon, where she has been “talking trees” for 27 years. A former newspaper reporter, she earned a bachelor’s degree in Technical Journalism and Horticulture from Oregon State University.  A Lifetime Honorary member of the American Society of Landscape Architects, Nancy has earned national recognition for her tree advocacy and stewardship efforts including over a decade of service on the board of directors of Friends of Trees. A member and a graduate of the Society of Municipal Arborists’ Municipal Forestry Institute (MFI), Nancy lives and gardens in Boring, beneath an ever-widening canopy of trees.

  • June 9, 2022: Border Management in Timor Leste and Indonesia: Trade Facilitation Stimulates Cross Border Trade and Enforcement to Protect Against the Introduction of Invasive Species with Tony Cambas, Manager of International Trade, Mississippi Small Business Development Center, The University of Mississippi, Gulfport. 

    Bio:  Anthony (Tony) Cambas has nearly 35 years of experienced in international trade in the public and private sectors and has worked as a Senior Advisor on Customs, export capacity building and SME development in nearly 20 countries overall in Africa, Asia, and Latin America.  In February and March 2020, he traveled to Timor-Leste to conduct a review of the Southeast Asian nation’s Customs and other government agency border management regulatory environment and practices.  Fortunately, he was able to return to the United States in March 2020, just as the USA and many countries were closing their borders.


    Tony is a former a U.S. Customs official who was part of the team responsible for implementing NAFTA. In addition, as a U.S. Customs Import Specialist Team Leader based in Miami, he enforced various U.S. import admissibility and export laws and regulations including: Other Government Agency (OGA) requirements including phytosanitary standards; harmonized system (HS) classification; valuation; non-preferential and preferential rules of origin; and Intellectual Property Rights. In addition, he has worked as a Senior Adviser and Consultant on Customs and Trade modernization and facilitation matters in various countries in Africa, Asia and Latin America.

    He currently works for the University of Mississippi as the Manager of International Trade for the Mississippi Small Business Development Center (SBDC) network.  In this role, Tony is responsible for providing international trade technical assistance and to entrepreneurs and small and medium enterprises. In addition, he develops and delivers training on international trade.

    Anthony is multilingual (English, Spanish, Portuguese and French). He holds a B.A. in International Relations and a Certificate in Latin American and Caribbean Studies from Florida International University in Miami, Florida; a Masters in International Customs Law and Administration from the Centre for Customs and Excise Studies at the University of Canberra in Australia and a Masters in International Agriculture from Oklahoma State University. He is a Licensed Customs Broker in the U.S.A., Certified Customs Specialist (CCS) by the National Customs Brokers and Forwarders Association of America NCBFAA); NASBITE Certified Global Business Professional (CGBP) and NASBITE Certified CGBP Trainer.

  • July 14, 2022: The Ethnobotany of the Lower Great Plains with Garry Vernon McDonald, Clinical Assistant Professor, Department of Horticulture, University of Arkansas, Fayetteville.

    Bio:  Dr. Garry McDonald is a Clinical Assistant Professor in the Department of Horticulture, University of Arkansas.  He received a B.S. and M.S in Floriculture from Texas A&M University and a PhD in Horticulture also from Texas A&M University.  Dr. McDonald teaches the landscape horticulture curriculum in addition to plant propagation and special topics.  His background includes owning and operating a landscape installation company and research in tropical horticulture, plant nutrition, field and greenhouse rose production, nursery production, and water quality/stormwater runoff.  Dr. McDonald has served as chair of the Bumpers College AFLS Curriculum Committee in addition to the chairing Department of Horticulture's Undergraduate Curriculum Committee.  He also oversees the undergraduate student internship program and acts as a lead in the Department of Horticulture curriculum assessment plan.

  • August 18, 2022: Provenance Matters with Steve Bieberich, owner and Kadin Bieberich, Sunshine Nursery, Clinton, Oklahoma.

    Born and raised in Clinton, Oklahoma, Steve began his career in the nursery business while still in high school. He pursued this botanical passion in college majoring in Biology at the Southwestern Oklahoma State University in Weatherford, Oklahoma. He is one of Oklahoma’s most knowledgeable of the native flora. He has traveled learning about plants around America and in China and Tibet.


    Steve and his wife, Sherry, established the Sunshine Farm & Nursery in 1981, propagating and growing ornamental trees, shrubs, and perennials.

    Steve is called upon frequently to provide lectures about his experiences in growing trees and his knowledge of the native flora of Oklahoma.


    He has conducted training seminars for Oklahoma Extension Agents, Master Gardener Programs, college student internships, and school groups.


    In 1993 Steve spent a month in northern China collecting seeds of hardy trees to try in western Oklahoma and in 1999 explored in Tibet. He has a large collection of elm species, his favorite. One of his Chinese elm selections has been named and patented for distribution in the United States, ‘Emerald Sunshine’(Ulmus propinqua ‘JFS-Bieberich’).


    Steve was honored by the Oklahoma Nursery and Landscape Association with the 2002 Outstanding Nurseryman of the Year award. He was awarded the George Vaclavek Gold Medal Award at the Oklahoma Horticultural Society’s Annual Meeting in February 2002.

    He served as President of the Oklahoma Nursery and Landscape Association in 2003.

  • September 15, 2022: In Quest of Tomorrow's Medicines from Native Plants of the U.S. Great Plains with Barbara Timmermann, University Distinguished Professor, Department Chair, Department of Medicinal Chemistry, University of Kansas, Lawrence.


    Distinguished Professor Barbara Timmermann joined the School of Pharmacy in August of 2005. She served as chair of the Department of Medicinal Chemistry from August 2005 to December 2012. She came to KU after an academic career of close to 25 years at the University of Arizona, where she attained the title of Regents Professor. She was elected as a Fellow of the American Association for the Advancement of Science (AAAS) in 2001 and as a Fellow of the American Society of Pharmacognosy (ASP) in 2014.

  • October 6, 2022: Evaluating the Invasive Potential of Popular Ornamental Plants, and Their Cultivars with Sandra B. Wilson, Professor, Department of Environmental Horticulture, University of Florida, Gainesville.

    Bio:  Sandra B. Wilson is a Professor in the Department of Environmental Horticulture at the University of Florida (UF). She completed her B.S. and M.S. degrees from the University of Delaware, her Ph.D. from Clemson University and conducted postdoctoral studies at Clemson University and Chiba University, Japan.  Her research focuses on characterizing the invasive potential of popular ornamental plants such as Chinese privet (Ligustrum sinense), Heavenly bamboo (Nandina domestica), Lantana (Lantana camara), Mexican petunia (Ruellia simplex) and their cultivars.  Complementary to this, she teaches courses in plant propagation, native landscaping, and annual and perennial gardening.  Throughout her career she has been recognized with a number awards including the UF Undergraduate Teacher of the Year Award, the UF Roche Professorship Award, the American Society for Horticultural Science (ASHS) Outstanding Undergraduate Educator Award, and the ASHS Outstanding Graduate Educator Award.  Most recently, she co-authored the world standard textbook Hartmann and Kester’s Plant Propagation- Principles and Practices, 9th edition.  For her outstanding contributions to horticultural science and education, she holds the distinction of Fellow within International Plant Propagators Society (IPPS), American Society for Horticultural Science (ASHS), and the North American Colleges and Teaching of Agriculture (NACTA).   

  • November 10: Trending Phenomena in Sustainable Park Development with Qing Luo, Associate Professor and State Specialist of Landscape Architecture, Department of Horticulture and Landscape Architecture, Stillwater, OK
    Bio coming soon.
  • December 8: Plants that Just Keep Giving with Brian Chojnacki, Owner, Sooner Plant Farm, Keys, OK.

    Bio: Brian Chojnacki was born in Michigan. He graduated from DuPage Horticultural School in Chicago, Illinois. Chojnacki was employed with Greenleaf Nursery in Oklahoma and Texas for four years as a plant propagator. He continued as a propagator for Midwestern Nursery ten years. In 1999 Chojnacki started Sooner Plant Farm as a wholesale landscape plant grower and supplier to independent nurseries and garden centers in a tri-state region until 2007 when they left the wholesale business and devoted their efforts to their rapidly growing internet business. This year marks 22 years for Sooner Plant Farm in Park Hill, Oklahoma.


    Brian and his wife Marsha have two children and two beautiful grandchildren. They enjoy traveling, working on the farm, and serving on mission trips with their church family. Learn more about Sooner Plant Farm!

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