Tri-Refresher via Zoom October 15 & 16, 2025
TRI REFRESHER EDUCATIONAL SEMINAR VIA ZOOM OCTOBER 15&19, 2025 TOPICS Indoor and Outdoor Pollution Houseplants: Do your Houseplants Hate You? Landscape Design: Principals and Elements OSU Field Trials Info and registration here: 2025 Ohio Tri-Refresher 8 1 25