CAMDEN — Botanist Alicyn Smart will lead an online webinar on common plant diseases and management hosted by Merryspring Nature Center Tuesday, April 12 at noon. Smart will speak about the University of Maine Plant Diagnostic lab, which serves as an essential resource for identifying diseases on plant samples from the green industry, farmers, and homeowners. The lab currently serves as the Northeast Plant Diagnostic Network Regional Center, which comprises 12 labs across the northeast. Smart’s research aims to reduce losses to plant diseases and minimize disease management costs by providing early and accurate disease identification. Access to a computer or smart device is required to attend. Email to register for this program. Zoom links will be sent on the morning of the program. Attendance is free for all. For more information, contact or call 236-2239.