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Earth Month Events

Pennsylvania & Delaware

Two girls standing on a beach holding large plastic bags filled with trash. They are both bundled up against the cold and wearing face masks. The water behind them is calm.
MLK Day of Service Heritage Conservancy, TNC and PA DCNR held a three week independent cleanup event to celebrate the MLK Day of Service and keep our open spaces and and waterways clean. © Molly Anderson / TNC

Join TNC for events and activities celebrating Earth Month. Gather your quaranteam for a self-guided clean-up or take part in the City Nature Challenge citizen science bioblitz.

  • 4/17 - 4/25 - Earth Day Independent Cleanups
  • 4/30 - 5/2 - City Nature Challenge
  • Ongoing - Self-guided Bioblitz
  • Ongoing - Nature Lab

Earth Day Independent Cleanups
April 17 - 25, 2021

Celebrate Earth Day with Heritage Conservancy, TNC and Pennsylvania Department of Conservation & Natural Resources (DCNR) by gathering your own "quaran-team" and conducting an independent cleanup.

Organize a small group of your choice and pick-up trash on any date between April 17 and April 25, 2021. You may select a location close to your home or office or pick one of our suggested properties and receive a map with property details.

Pre-registration is required for this event. Contact Liz Barmach at or 215-345-7020 x105 with questions or for more information.

All participants must comply with CDC, state and local COVID-19 precautions designed to reduce the spread of the virus including, but not limited to, wearing a face mask, practicing social distancing and following proper hand hygiene protocols.

City Nature Challenge
April 30 - May 3, 2021

The City Nature Challenge (CNC) is an international citizen science effort to discover and document plants and wildlife in cities across the globe. The observation period of CNC 2021 will take place April 30 - May 3.

It’s easy to get involved using the iNaturalist app (free on the app store). Just take a picture of a plant or animal and upload it to the app. Explore your neighborhood parks—or even your own backyard. There's nature all around you! 

Self-guided Bioblitz

Help us learn more about the plants and animals at our preserves! iNaturalist projects are set up at 15 of our preserves in Pennsylvania and Delaware, and we need your help recording observations of the species found there. Email Molly Anderson, volunteer program manager, at to sign up or learn more.

Nature Lab

Take a virtual field trip or explore nature-themed lessons and family fun activities. Our youth curriculum is designed for students ages 5-11, 11-14, and 14-18. 

Join Us!

Gather your quaran-team for an independent Earth Day cleanup.