New “Invasives” of the Wissahickon

WRV has launched a project aimed at tracking new “invasive” plants of the Wissahickon, by which we mean newly introduced non-native plants. The purpose of the current project is to get a handle on non-natives that seem to have sprung up only recently, and to determine whether or not these species might establish themselves at the risk of native plant populations… Read more >>>

WRV 2020 Impact Report

In a year of unprecedented challenges, WRV still found ways to continue our mission to restore the natural areas of Wissahickon Valley Park, working safely with small volunteer crews to plant 100 trees… Read more >>>

Tracking 20 Years of Data

Since 1997 WRV has planted over 4,000 trees and shrubs.  In order to track the data related to these restoration efforts, we have recently begun tagging all the trees that we plant, as well as attempting to locate and tag the trees we have planted in the past. … Read more >>>

The Sam Ozer Memorial Project

In October 2020 volunteers began to clear invasive exotic plants from a new site along the trail between Historic Rittenhousetown and Blue Bell. Now, in an area that had once been blanketed by a dense monoculture of Japanese knotweed, a small forest – Sam’s Forest – is beginning to grow… Read more >>>

WRV Statement in Support of Black Lives Matter

WRV supports the goals of the Black Lives Matter movement to end violence against Black people and to build a society “where every Black person has the social, economic, and political power to thrive.” That is only possible when Black people can live without fear of violence… Read more >>>

Restoring the Wissahickon One Tree at a Time

We aren’t going to let the constraints of social distancing in this age of COVID-19 stop us from continuing our mission. We are venturing into the Wissahickon in one-person crews to plant trees and remove invasive plants, as well as gathering data and checking on previous restoration projects from years past… Read more >>>


Thank you for reading! Please consider supporting our work. Your donation will help keep the Wissahickon green and diverse, and all donations are Tax deductible.


WRV is a member-supported nonprofit dedicated to protecting and improving the natural environment of the Wissahickon.

Please join us in keeping our beloved Wissahickon green and diverse for future generations.

COVID-19 Update

Due to social distancing restrictions, we are not leading large volunteer crews into the Wissahickon at this time.

To find out how we have been able to continue our mission despite the pandemic, check out our 2020 Impact Report >>>

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