∙ ReLeaf Region 2 Free Fall Webinar: NYC Tree Census Presented by NYC ReLeaf. Since 1995, NYC Parks has conducted a citywide tree inventory once a decade. This count helps NYC understand and care for the trees that make the city livable, resilient, and beautiful. Kasha Pazdar, a community [...]

Guest Contributor: Amy Mackenzie, NYSDEC Urban Forester On September 24, 2026, a pruning workshop brought municipal staff in Westchester County together with International Society of Arboriculture Certified Arborists from private industry and public entities to increase awareness of proper pruning and tree care practices. The [...]

Ruth Keeler Memorial Library and North Salem Open Land Foundation are partnering with Cornell Cooperative Extension/Westchester County for this in-person presentation at the library at 5:30pm on Monday, October 26th. The Spotted Lanternfly arrived first in New York City in 2020 and is now established in the Lower Hudson [...]

It’s that time again, the 2027 Arbor Day Poster Contest is now open! Submit original photography or artwork for a chance to have your work featured on the next DEC Arbor Day Poster. Submissions will be accepted through November 10, 2026. This year’s theme is “Trees for Vibrant Communities”, [...]

Join Lasdon Public Gardens on October 16 from 1:00-3:30 PM for an enriching outdoor painting workshop where every student creates their own unique masterpiece. Set against the inspiring backdrop of Lasdon Public Gardens, this En Plein Air experience — named for the French phrase meaning “in the open air” [...]

Through mini presentations and hands-on paint-making, this workshop, hosted by Cornell Cooperative Extension Columbia and Greene Counties on two Sunday afternoons, explores what positive relationships might be possible once we stop seeing invasive plants only as something to fight, without denying ecological harm. The [...]