Celebrating 50 Years of PLT 

February 5, 2026

This year, Project Learning Tree (PLT) is proud to celebrate 50 years of fostering a lifetime of learning through advancing environmental education, forest literacy, and career pathways, using trees and forests as windows onto the world. 

For five decades, PLT has helped learners of all ages build meaningful connections with the world around them, inspiring action to keep our natural resources healthy, our economies productive, and our communities prosperous. Beginning in early childhood, PLT teaches students how to think, not what to think, about complex environmental issues, and as they grow, young people develop the problem-solving skills they need to make informed environmental choices. 

Rooted in Impact

What started as a group of educators, conservationists, industry, and government agencies in 13 states evolved into a multi-national phenomenon, inspiring young people to learn about nature. These individuals planted a seed that has taken root and grown into something incredibly special. We are thankful to have a well-established network of 52 statewide partnerships that are committed to making an impact and reach nearly 150 million students through 765,000 trained educators since PLT began.  

But this milestone isn’t just about looking back. It’s about planting seeds for the next 50 years. 

Growing for the Next 50 Years

As we celebrate 50 years, we are also looking to the future, and that future depends on continued support. We need your support to continue cultivating the next generation of environmental leaders. This year, consider investing in PLT and our Roots for the Future giving campaign. Every dollar helps us reach our goal of ensuring every child has access to nature-based education and green career pathways. 

Make Nature Your Classroom

However you support PLT, we’re grateful for you. Whether you use activities from our guides on the regular or you’re ready to take your first PLT professional development workshop, we’re thrilled that you’re a part of our mission. Thanks to you, more children are introduced to the magic of nature! 

Help Us Celebrate 50 Years

We want to hear how Project Learning Tree has impacted your life and your learners! If you’re a PLT fan, tag us on Facebook and Instagram (@projectlearningtree) and share your favorite PLT memories or activities over the years! Use the hashtag #50PLT. 

Ana Leirner

Ana Leirner

Ana Leirner is Director of Professional Learning and Education Products for Project Learning Tree. She advances PLT's work by ensuring that people working with youth and communities have the knowledge, skills, and confidence needed to advance environmental literacy, stewardship, and green career pathways.