PA/NJ Chapter of The American Chestnut Foundation

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PA/NJ Chapter of The American Chestnut Foundation The American chestnut tree was once the dominant tree in our forests accounting for 1/4 of the trees in some areas. Visit: panjtacf.org to learn more.
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Pennsylvania Chapter of The American Chestnut Foundation
Historical Summary and Milestones

The Pennsylvania Chapter of the American Chestnut Foundation was founded in 1994 with incredible help and enthusiasm from its founding members. What has driven the Chapter from inception to its present state is the continued and almost unbound enthusiasm and work ethic of its volunteer members. Without the tireless efforts of Ann and Bob Leffel, the Chapter‘s founders, the following milestone’s would not have been reached. When Dave Armstrong joined the effort, the Chapter reached new levels of outreach, fundraising, and success. Many others have contributed amazing amounts of energy, funding, land, and support. And they are those to whom this Chapter owes a great debt of gratitude. Spring 1988 - First TACF Backcross planting in Pennsylvania at Reineman Wildlife Sanctuary. Douglas Source BC1s were planted there, 1 of which still survives

Spring 1994 - Pennsylvania Society for the American Chestnut is formed by Rod Clapper. Factors force the organization to later reorganize later into the PA Chapter of The American Chestnut Foundation

Spring 1994 - Ann and Bob Leffel plant first BC3 generation trees

Summer 1995 - First Chapter backcross pollinations, led by Ann and Bob Leffel
Success! 273 BC3 nuts from Ort x CL287 cross

March 1995 - Volume 1, Number 1 of PA Chapter newsletter printed

March 1995 - MEMBERSHIP = 170

April 20, 1996 - First Annual Meeting of PA—TACF in Roaring Spring, PA. Hosted by Barney and Charlotte Barnhart, founding members of both the PA Society and PA Chapter of TACF. The Barnharts were vital contributors, hosting several meetings, donating many resources, and, since its inception, printing each issue of the PA Chapter’s newsletter. April 20, 1996 - License agreement signed with TACF

March 21, 1997 - With help of forestry professor Dr. Henry Gerhold, Penn State University partnership is established with planting at Gamelands 176

Summer/Fall 1998 - Dave Armstrong opens Chapter office in York, PA

October 17, 1998 - Chapter hosts TACF Annual Meeting at Longwood Gardens

Spring 1999 - PA—TACF includes Maryland with planting at Thorpewood in Thurmont

Spring 1999 - PA—TACF included Delaware with planting at Red Clay Reservation in Hockessin

March 1999 - MEMBERSHIP = 531

March 2000 - Dave Armstrong initiates Chapter presence on the web with http://www.pachaptertacf.org

May 29, 2000 - First Chapter inoculations take place at the Leffel’s farm in Brogue, PA

Spring 2001 - Dr. Bob Leffel and the chapter initiate testing of two methods that could revolutionize chestnut breeding. (1) Utilization of the phenomenon of CMS (Cytoplasmic Male Sterility) can ease difficulties associated with controlled pollinations. (2) Inclusion of MSR (Multiple Sources of Resistance) can

May 2001 - With help of forestry professor Dr. Kim Steiner and research technology Tim Phelps, the largest backcross orchard in Chapter established on Penn State land in Rock Springs, PA. 1820 nuts planted. Summer 2002 - With the continued support of Kim Steiner and Tim Phelps, the Chapter establishes first BC3F2 seed orchard in the Arboretum at Penn State

January 2003 - With help from National Office, first full—time Chapter employee hired. October 2003 - MD Chapter splits to form a hugely successful organization. Spring 2004 - PA—TACF includes New Jersey with two CMS plantings in Morris County. Summer 2005 - First inoculations of BC3F2 material. Fall 2007 - First BC3F3 generation nuts are produced. September 2006 - MEMBERSHIP = 946

October 2006 - First Chapter administrator hired for Penn State Office. October 2006 - Chapter opens the “Leffel Center” at Penn State, in honor of the Chapter’s founders, Ann and Bob Leffel. September 2008 - MEMBERSHIP = 1040

That’s a wrap on  ’s   2026! What a fun few days we’ve had. Thanks so much to our amazing volunteers: Steve, John, Brian...
08/13/2026

That’s a wrap on ’s 2026! What a fun few days we’ve had. Thanks so much to our amazing volunteers: Steve, John, Brian, and Alvin! (All have tabled this event at least twice if not far more!) We enjoyed welcoming Cassie (TACF’s newest State College resident) to our table for the first time. And of course this experience just wouldn’t be the same without our resident chestnut experts, Lake and Noah. We are still buzzing from the joy of meeting so many new chestnut friends and getting to say hello to old friends who came by. Don’t you just love how this little nut brings people together? 🌰💗🥰

Another fun day at Penn State’s Ag Progress Days! Snuck a few pics of Lake chatting chestnuts. We love answering questio...
08/12/2026

Another fun day at Penn State’s Ag Progress Days! Snuck a few pics of Lake chatting chestnuts. We love answering questions, explaining about our work with recurrent genomic selection, and hearing all the chestnut stories. More than a few have told me how they would throw the spiky burs at their siblings when they were kids. (Ouch!) 😆 Many have described the beautiful American chestnut beams or floors in their old barn or cabin. (Lucky!) All look forward to seeing this iconic tree make its triumphant return to the eastern forest. (We’re getting closer every day!)

When I awoke this morning to an intense thunderstorm and no power, I had my concerns about opening day of Ag Progress Da...
08/11/2026

When I awoke this morning to an intense thunderstorm and no power, I had my concerns about opening day of Ag Progress Days. Fortunately, my worry was unfounded. The rain cleared and we have already had the chance to chat with some wonderful folks. If you’re attending, be sure to stop by our table in the J.D. Harrington building to say hi!

Feeling a little FOMO? We have room for last minute volunteers tomorrow. Email [email protected] to let us know if you’d like to join us, or just come on over!

Pic 1; Noah and I (Audrey) grabbed a selfie after getting our booth set. Pics 2-4; A few snaps of Noah chatting chestnuts with our first visitor of the event.

It’s that time again! We’re calling for our outreach superheroes to table Ag Progress Days with us! This three day event...
07/28/2026

It’s that time again! We’re calling for our outreach superheroes to table Ag Progress Days with us! This three day event (8/11-8/13) is really a fun one. We meet so many interesting and interested people to talk chestnuts with! Can you be a hero in this restoration story? Help us keep our mission going strong by sharing the story of the American chestnut! Sign up at link in bio! (And did I mention our booth is indoors?)

Stopped by the greenhouse yesterday to find Lake and Noah hanging out with a few of our favorite volunteers; David, Tim,...
07/18/2026

Stopped by the greenhouse yesterday to find Lake and Noah hanging out with a few of our favorite volunteers; David, Tim, Judy, Jay, and Dawn, for a day of small stem inoculations (SSAs), the process of applying blight inoculum to a small scratch in the stem of a seedling. Monitoring and measuring each plant’s resistance to the blight is part of the breeding process. Sadly, not all will make it, but we’ll find some strong young fighters in the bunch! 💪 🤞🌳 🌰 Awesome work by all- they had a wildly productive day!

Eight down… a few hundred to go! (JK! We have bagged far more than eight.) But, after suffering a late freeze this sprin...
06/23/2026

Eight down… a few hundred to go! (JK! We have bagged far more than eight.) But, after suffering a late freeze this spring, our central PA chestnut trees are just a bit behind their southern counterparts in the growing season. Which means while theirs are wrapped, our bagging days are still underway! Noah was kind enough to take a moment in the canopy to share about his bagging process with us. Pretty cool!

Now imagine all the bags on all the trees across the native eastern range… Think about all of the dedicated people, staff and volunteers alike, responsible for the thousands of controlled pollinations happening this summer. American chestnut restoration is an incredible group effort of conservationists spread far and wide. So many caring people braving the heights for the cause. Pretty amazing, don’t you think?

The foxgloves sure are happy in our Penn State Arboretum orchard! 📷: Noah Vincent
06/17/2026

The foxgloves sure are happy in our Penn State Arboretum orchard! 📷: Noah Vincent

06/16/2026

How do you know if your soil is good for ? Lake gives us some good tips for assessing through observation.

Chestnuts like well-draining soil, like a nice sandy loam. (Have you tried the “ribbon test”?)

They prefer slightly acidic soil with a pH between 4.5 and 6.5. (Look for nearby indicator species, like wild blueberries, wild strawberries, and teaberry-AKA wintergreen).

Of course, you can get technical and send your soil out for testing, but these methods can give you a good idea of what to expect.

05/22/2026

It may look like a hungry little caterpillar has been dining in our greenhouse, but nope!

Noah’s been busy genotyping - taking a DNA sample of top offspring from previous controlled crosses. The samples will be evaluated using the Recurrent Genomic Selection model to select the most disease-resistant offspring based on their DNA profiles.

The top 10% of offspring will be chosen for the next round of parent selections. The rest will be field tested for long-term disease response to add more data to the model.

Find out more about the remarkable RGS breeding program at TACF.org/tree-breeding/

Orchard Manager Noah Vincent, TACF Director of Science Implementation Cassie Stark, and TACF North Central Regional Scie...
05/18/2026

Orchard Manager Noah Vincent, TACF Director of Science Implementation Cassie Stark, and TACF North Central Regional Science Coordinator Lake Graboski with The Chestnutmobile, and in the hoop house at Mendel’s Way greenhouse this morning.

Address

Penn State University, 108 Research A Modular Lab
University Park, PA
16802

Opening Hours

Monday 9:30am - 3pm
Tuesday 9am - 3pm
Wednesday 9am - 3pm
Thursday 9am - 3pm

Telephone

+18148637192

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