Reviving the American Chestnut - Restoring Abundance in Mid-Atlantic Forests

By Joseph Resch & Lauren Krumm

Bringing Back a Keystone Species:

Imagine a woodland of towering trees, some over one hundred feet tall with trunks up to fifteen feet across, and a thick layer of delicious nuts blanketing its floor. The creatures bustle about, gathering as much of the precious food as they can. Allegheny woodrats and other rodents add chestnuts to their winter caches, bears have a buffet, flocks of passenger pigeons and wild turkeys hurriedly gulp them down, and even humans could be seen collecting basketfuls of this rich source of nutrition. This would have been a common scene in parts of the Eastern United States, where the American chestnut (Castanea dentata) trees were once a keystone species in our forests. Though we may never see this in our lifetimes, and several of the critters that relied on these trees have gone extinct (passenger pigeons and several species of moth), we can certainly help Nature make progress towards filling this niche again. In this article, we describe the efforts of Antinanco, a non-profit organization based in Holmdel, NJ and our community of families, friends, and volunteers to help bring these and other native food-producing plants back to our forests.

An American chestnut resprout on Long Island, NY. This is most likely a remnant of what was once a healthy tree a century ago.

The original idea was to hold a tree planting workshop for kids and focus on restoring trees which both needed help in repopulating and could add the greatest value to the ecosystem. The American chestnut was chosen not only because of its unfortunate demise and functionally-extinct status, but its great potential to help feed our dwindling wildlife populations and possibly even people, as it did long ago. The inspiration to choose a tree with this potential comes from the examples that our indigenous brothers and sisters have set for us, which show that the Land can be gently cared for in a way that creates habitat for a diversity of life, and native plant species can be intentionally cultivated in order to feed this life.

American chestnut seedlings freshly planted in a reclaimed farm field at the South Branch Preserve in Budd Lake NJ. Chestnuts must be protected from rodents and deer when they are young.

In November of 2018, amidst a blanket of fresh wet snow, a group of roughly fifteen children, adults, and a cute dog named Gigi set out upon a rustic farm in Eastern Pennsylvania to plant chestnut seedlings. Under the leadership of Joseph Resch, who assumed the position of the American Chestnut Revival Project Leader shortly thereafter, the group planted twenty-six trees with love and careful intent, named, and protected them from deer with funny-looking white plastic tubes. The seeds, or rather, seedlings, were sown. Though this was just one activity in a weekend-long event focused on practicing and preserving Earth-centered traditions, it was soon to grow. After experiencing firsthand the enthusiasm of the participants and volunteers, it became clear to the Antinanco team, expanding on the program was inevitable and would be of great benefit to all.

Knowing there are no fully chestnut-blight resistant seeds or seedlings yet available, though there are organizations such as the Connecticut Agricultural Experiment Station and the American Chestnut Foundation working diligently on solutions to this, we select seedlings for planting from surviving American chestnut trees with the ability to resist the blight enough to flower and produce nuts. This method will provide a new generation of trees that can be monitored for blight-resistance as well as help preserve the genetics of the surviving native trees we have been left with. From those trees, the individuals which demonstrate the ability to grow strongly and produce nuts can be used to help breed even more tenacious generations in the future.

Two-year old hybrid American/Chinese chestnut seedlings ready for planting. If seedlings are to be started in containers, a deep pot is best for establishing a long healthy taproot.

Adding to our mission to revive this keystone species at a time when it is needed most, we have begun expanding the diversity of our planting sites with other native trees. Wherever possible, we utilize spaces that have been left by other trees which are unfortunately declining due to invasive pests. After all, as the old adage goes, variety is the spice of life. The more we can provide diverse food sources for our wildlife, the more resilient their populations as well as our ecosystems will be. The canopy space once occupied by an Ash tree for example, which unfortunately may have lost its battle with the invasive Emerald Ash Borer, can be replanted with another species that needs help reestablishing and enjoys similar site conditions. While our primary focus so far has been to reintroduce the American Chestnut tree, we want to make sure there are as many species as possible producing food for humans and wildlife at any given site.

Blue cardinal flower (Lobelia siphilitica) is a native plant that benefits pollinators. These and other species are added at planting sites to provide food for wildlife and fix nitrogen for the trees.

Many gardeners may be aware of a concept called 'companion planting,' in which different species of plants are intentionally grown in close proximity to each other to make use of specific benefits they may provide. Antinanco has incorporated plantings of other native species with the chestnuts, some with the intent of possibly aiding the chestnuts’ growth and health, and others in order to expand the diversity of food production on the sites. For example, herbaceous perennial plants such as False Indigo (Baptisia australis) and Slender Bushclover (Lespedeza virginica) were added near the trees to make use of their nitrogen-fixing abilities as well as for their potential benefits to pollinators. Native trees such as Honeylocust (Gleditsia triacanthos) and Black Locust (Robinia pseudoacacia) were planted for the same purposes, spaced a bit farther away, and can be cut back without being killed if they begin to compete with the chestnuts. Native fruit-producers, Pawpaw (Asimina triloba) and Persimmon (Diospyros virginiana), were planted at the sites as well, with Pawpaws being sited where the soil stays more consistently moist.

Over the following two years since the first planting, Antinanco offered four more tree planting workshops in Pennsylvania and New Jersey. This has resulted in a total of two hundred fifteen native trees being planted by volunteers, children, and families. We pay these trees a visit each season to remove weed competition, take measurements, and compare the impacts of companion plants, tree genetics, sun/shade on site, and juglone presence on their health and growth. Also of great importance to us is the ongoing monitoring and care of our American chestnut seedlings. We have noticed signs of chestnut blight in several of them, with the majority showing the ability to grow well despite this so far. We plan to test various methods of helping these trees as they grow, gathering as much useful data as possible along the way. Some of the trees from our first planting have already exceeded six feet in height.

Hardware cloth is cut and shaped into cylinders to protect the base of each tree from rodent damage. Without it, they can be girdled or completely cut off at the base.

Antinanco’s American chestnut tree planting workshops have evolved into a well anticipated annual program, offering a fun and educational channel for raising awareness of the American Chestnuts decline and its impact on local ecosystems. Our hands-on approach includes learning activities as well as group discussions with our resident forest experts, and step by step training and guidance through the planting process. Local volunteers learn to prepare a comfortable home for the trees by taking measures to protect them from wildlife, digging holes to proper depths, inoculating the roots with ectomycorrhizal fungi spores, taking careful notice of soil levels, and adding companion plants. Each newly planted seedling is named and labeled, which is helpful in tracking their progress and makes them easier to find when volunteers revisit their trees.

Our 2020 planting season saw much growth in attendance and overall interest in the project. We engaged over 150 local scouts, students, parents and other volunteers within two planting events. Amid the Covid-19 pandemic, our participants enthusiastically turned out with shovels in hand and contributed to the planting of forty American chestnut trees, forty-three Pawpaws, ten American Persimmons, nine Hazelnuts, five Honeylocusts, three Black Locusts and hundreds of companion plants.

In addition to growing community involvement, Antinanco is proud to have published and released our very first book “American Chestnut Tree Conservation Field Course - Manual for Forest Ecology and Conservation of the North-East States" . The manual is designed for undergraduate college students and explores the topics of ecological principles to manage ecosystems, specifically focusing on the conservation of the American chestnut tree species. It includes fieldwork and lab components, and teaches how to recognize forest disturbances, determine forest age, identify dominant and understory species, the principles of basic tree identification, and how to measure biological diversity, tree growth and tree health.

Both paperback and digital versions are available for purchase on our website: https://www.antinanco.org/product-page/american-chestnut-tree-conservation-field-course-manual-for-forest-ecology

or Amazon: https://www.amazon.comCAN-CHESTNUT-CONSERVATION-FIELD-COURSE/dp/0578806932/ref=sr_1_2?dchild=1&keyw“American Chestnut Tree Conservation Field Course - Manual for Forest Ecology and Conservation of the North-East States".\anual for Forest Ecology and Conservation of th“American Chestnut Tree Conservation Field Course - Manual for Forest Ecology and Conservation of the North-East States" .\

In Conclusion:

This project is about connecting, or re-connecting, plants and people in a mutually beneficial relationship. By restoring food-producing species to the forest and carefully tending to them as a community, we can help spread awareness about natural food production for humans and wildlife, and not only preserve but cultivate biodiversity. Quite possibly, these legendary native trees may one day decide to reward us with baskets full of Chestnuts, Pawpaws, and Persimmons.

Get Involved:

Stay informed about our American chestnut adventures, planting events, volunteer opportunities and project developments by signing up for our mailing list here: https://www.antinanco.org/subscribe.

Visit our website at: https://www.antinanco.org/american-chestnut-trees to learn more and join us on Facebook, https://www.facebook.com/antinancobee, where we post regular updates about the project.

You can also contribute to this project by supporting the following public parks which have generously offered their land as a safe home for the seedlings. These parks and the amazing caretakers of these lands are protecting our plantings for the future.

· Columcille Megalith Park in Bangor, PA: http://columcille.org/

· The Land Conservancy of NJ, South Branch Preserve in Mount Olive, NJ: https://tlc-nj.org/portfolio-item/into-the-woods/

· Graver Arboretum in Bath, PA: https://www.muhlenberg.edu/aboutus/graver/

Educational Resources:

We also encourage anyone interested in learning more about the American chestnut, its history, and restoration efforts to look into:

· “American Chestnut: The Life, Death, and Rebirth of the Perfect Tree”, a book by Susan Freinkel

· The American Chestnut Foundation at: www.tacf.org

· Sandra L. Anagnostakis’ extensive publications at: https://portal.ct.gov/CAES/ABOUT-CAES/Staff-Biographies/Sandra-L-Anagnostakis

· The American Chestnut Cooperator's Foundation a

· Clark, Stacey. L, An Introduction to the American Chestnut Online Course. Available at https://www.srs.fs.usda.gov/products/courses/