Lee Fredericks

At Rainbow Ecoscience, Lee is a trusted industry adviser creating fundamental breakthroughs for green industry companies while offering predictable results in the world of Plant Health Care. Lee is a 25-year Certified Arborist, Certified Pesticide Applicator and past Certified Landscape Professional and has a B.S. in Business Management and Urban Forestry. Experience includes several different sectors of the green industry including professional tree care, landscape maintenance and plant health care. Lee is Board Member for Wisconsin Arborist Association, WI Urban Forestry Council and Logistics Site Leader for an industry non for profit called, Saluting Branches.

Laura Jull

Dr. Laura Jull received both of her A.A.S. degrees from Oakland Community College in Landscape Technology and Liberal Arts. She earned a B.S. degree in Horticulture from Michigan State University and M.S. and Ph.D. degrees in Horticultural Science from North Carolina State University.  She has worked for almost 40 years in numerous positions in the Green Industry. Since 1998, she has been a professor and Extension Specialist for Woody Ornamental Horticulture at the UW-Madison.

PJ Liesch

Patrick (PJ) Liesch is an Extension entomologist and the director of the University of Wisconsin Insect Diagnostic Lab.  PJ also provides entomology-related outreach throughout the state, including regular appearances on Wisconsin Public Radio..

Kristine Moncada

Kristine Moncada is a turfgrass researcher in the Department of Horticultural Science at the University of Minnesota, where she focuses on sustainable lawns including fine fescue lawns and bee lawns. Her hobbies include growing vegetables, planting for pollinators, and observing insects.

Josh Roggenbuck

Josh Roggenbuck has been in agriculture all of his life.  Growing up on a sugar beet farm and working from young childhood, he found his passion for plants at a local Christmas tree farm and then a landscape nursery.  He attended Michigan State University to obtain his degree in Horticulture before building a greenhouse and garden center with his parents and operating it for nine seasons.  Walters Gardens is North America’s leading producer of perennial liner plants.  They supply plugs and bare root plants to nurseries, greenhouses, and mail order companies in every one of the United States, as well as to many provinces in Canada.  Also a breeding company, Walters Gardens introduces around fifty new varieties each season across dozens of plant genera.  For over a decade, Walter Gardens has been the home of Proven Winner Perennials and proudly supplies the genetics and liners for a lineup now over 200 varieties strong.  Josh’s job at Walters Gardens is to oversee sales in the Midwest.  He also leads the company’s initiatives with retail companies and landscape designers.  Last and most important, Josh resides in Mid Michigan with his wife Sarah and daughters Stella and Hattie.

Regional Product Manager, Walters Garden

Doug Soldat

Doug Soldat is a professor and turfgrass extension specialist and chair of the Department of Soil Science at the University of Wisconsin-Madison. Doug completed his B.S. and M.S. degrees in Soil Science from UW-Madison and earned a Ph.D. in Plant Science from Cornell University. His research and outreach programs are focused on improving turfgrass nutrient and water use efficiency. Doug teaches courses on turfgrass management and general soil science at the University of Wisconsin. 

Professor, UW-Madison