Grow Native Massachusetts is sponsoring a public lecture series from February through June, 2013, from 7 – 8:30 on the first Wednesday of each month at the Cambridge Public Library, 449 Broadway in Cambridge.Â The first of the free series in entitled Managing Invasives at Home and Around Town, with Eric Olson and Josh Ellsworth, lecturers at Brandeis University and citizen stewards. Founder of the Newton Invasive Plant Task Force, Dr. Olson has led substantial volunteer efforts to control invasive species in Newton and Waltham. He will discuss this management challenge, especially the importance of building trust with local Conservation Commissions, and the risks and pleasures of depending entirely upon volunteer labor. Josh Ellsworth will help us understand the ecology of invasives, along with specific techniques for controlling the species we most commonly encounter in Greater Boston. Dr. Eric Olson and Josh Ellsworth both teach at Brandeis University. Lecture Co-sponsored by The Friends of Fresh Pond Reservation.Â Photo of knotweed pull site from www.newtonconservators.org.