During the Great Depression in the 1930s, long after Pennsylvania’s virgin forests had been logged, leaving eroded mountainsides, the United States Civilian Conservation Corps planted 60 million trees to heal the landscape.
Beginning in 2018, in what is likely the largest tree-planting initiative since the CCC program, thousands of volunteers and property owners have rooted millions of trees as part of a public-private venture — the Keystone 10 Million Trees Partnership, or K10 for short.
The goal is simple: Plant 10 million trees across Pennsylvania by the end of 2025 and create the equivalent of a 50,000-acre forest. This would also establish about two-thirds of the forested streamside buffers called for in the state’s plan to help clean up the Chesapeake Bay.
To date, 5.7 million native trees and woody shrubs of roughly 70 species have been planted along streams and streets; in parks, neighborhoods, and backyards; around schools and churches; and on abandoned mine land.
There are priorities. Getting 70% of those trees planted in Pennsylvania’s portion of the Chesapeake watershed — about half of the state — is one of them. So is greening environmental justice communities and putting more trees in headwater areas, which benefits everything downstream.
Despite covid setbacks in tree supplies and tree-planting events, officials with the Chesapeake Bay Foundation, which is spearheading the project along with nearly 300 partners, say the goal will be met on time.
But they admit momentum, energy, and effort will have to swell even more. The group budgeted $6.9 million for the project in fiscal year 2022.
“Absolutely,” replied Joe Hallinan, the foundation’s K10 manager, when asked if planting 4.3 million trees in less than three years is realistic. “The way we are further expanding partnerships is growing exponentially because we’re out there and people are seeing it. People see their neighbor doing it and get involved.”
In a scene repeated several thousand times since 2018, volunteers from organizations and communities converge to plant hundreds of trees in a single day. A homeowner, on the other hand, may plant just a single tree.
Many benefits
The K10 initiative casts a wide net for public support by espousing trees’ broad range of benefits. The massive planting, partners maintain, improves not only Pennsylvania’s environment and ecology, but also its economy and communities.
Trees intercept stormwater runoff from urban and suburban areas, as well as farmland, filtering the water and stabilizing banks. That improves water quality in streams and helps everyone from residents who swim and fish in local streams down to the Chesapeake Bay itself.
The canopies of leaves filter the air and store carbon, the main greenhouse gas causing climate change. Their shade is a vital refuge for those caught in increasing urban heat waves. It can also lower a house’s air conditioning demand.
Trees filter dust, increase property values, and reduce stress. Humans seem to be hard-wired to find beauty and solace in trees and forests; more than one study has suggested that being among trees improves people’s moods.
Trees also have been shown to reduce health care costs, and multiple studies have found that crime rates go down in cities where there is tree canopy.
“We really like to focus on economic and community benefits. People learn better around trees. People heal faster. Families and friends gather under our trees,” Hallinan said.
“Ten Million Trees has been really wonderful to raise awareness,” said Teddi Stark, watershed forestry program manager at the state Department of Conservation and Natural Resources, one of K10’s biggest partners. “Before, not many people were aware of all the benefits of planting trees and how important it is.”
“We’re really excited,” Hallinan added, “to see how we’re not just planting forests, but also normalizing a culture of conservation. We are allowing people to rethink how they are managing their properties.”
While mass community plantings are important for the program’s numbers game, one of the K10 partners — Pennsylvania Interfaith Power and Light — is focused on citizens who want to do the right thing but, for any number of reasons, can only add a few trees to their own yards or neighborhoods.
“We try to meet that need and are committed to working with our environmental justice communities,” said Katie Ruth, the faith-based group’s executive director. “The value of the program extends well beyond the environmental benefits. I’ve seen community-building.”
Making up for losses
While the project moves ahead, the state continues to see a net loss of tree cover each year. Pennsylvania lost 37,500 acres in 2022 alone, according to Global Forest Watch.
In response, Harry Campbell, CBF’s science policy and advocacy director in Pennsylvania, points out that while tree loss on private land is concerning, K10 is planting trees where science shows they have the greatest impact on water quality, urban heat islands, abandoned mine land, and other areas of concern.
But getting volunteers to show up and spend a day putting trees in the ground does not a buffer make. In recent years, research has shown that new trees have low survival rates if they are not properly planted or well maintained in their first several seasons.
Aware of this, K10 has partnered with the National Aeronautics Space Administration, which uses sensitive satellites to track individual tree and canopy heights. The K10 team analyzes the findings to determine if their plantings are indeed growing and find spots where they may need to troubleshoot.
Every tree is staked for stability, and its narrow trunk is covered in a protective tube to prevent bark damage. For people who want to plant trees in their yards or communities, the Pennsylvania Horticultural Society has groups of “Tree Tenders” around the state that offer classes on tree care and guidance on organizing neighborhood plantings.
To learn more about the Keystone 10 Million Trees Partnership, visit tenmilliontrees.org.
This article was originally published in the Bay Journal, a non-profit news source that provides the public with independent reporting on environmental news and issues in the Chesapeake Bay watershed.
Ad Crable is a Bay Journal staff writer based in Pennsylvania.
Title image: Pond at Pickering Creek Audubon Center, Talbot Co. Photo: Jan Plotczyk