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Grounds & Horticulture Staff

Jeff Jabco

Jeff serves as the Director of Grounds and Coordinator of Horticulture for the Scott Arboretum of Swarthmore College, and has been on staff since 1990.  Before coming to Swarthmore, he worked for Penn State University Cooperative Extension as a horticulture agent in southeastern Pennsylvania.  He also owned and operated a garden design and vegetable production business.  Jeff is a graduate of Penn State University and has a Master's degree from North Carolina State University in horticulture/plant breeding and plant pathology.

Jerry Schrack

Jerry, Assistant Director and Horticulture, Joined the staff in April, 2019.  Previously, Jerry served as Director of Operations at the Philadelphia Zoo for 16 years.  Prior to the Zoo, Jerry served as a Horticulturist for the Smithsonian Institution and USDA-Beltsville Agricultural Research Center.  He also worked for the Baltimore Museum of Art and the Brickman Group.  Jerry has a BS in Landscape Contracting from Penn State University and is a certified arborist with International Society of Arboriculture.  He lives in Wilmington with his wife and 3 kids.

Daniel Blanton

Dan has worked at the Scott Arboretum of Swarthmore College since 1976, and for most of those years was a member of the athletic field crew.  He has registered technician status in pesticide application and integrated pest management training.

Sandra Lopez Cortez

Sandra grew up in Guanajuato, Mexico and moved to Kennett Square at age 14.  She attended Penn State University for three semesters then continued her education at Longwood Gardens.  Sandra graduated from the Professional Gardener Program at Longwood in 2013 and worked at Doe Run Farm LLC in Coatesville for a year growing vegetables and micro greens.  She became a member of the Scott Arboretum Staff in 2015.   She has a BS in plant science from the University of Delaware.

Andrew DeGothseir

Andrew joined the staff in 2019.  He holds a Bachelors degree in Ornamental Horticulture and Environmental Design from Delaware Valley University.  Before joining the horticulture staff, he worked at Haverford College, the Westtown School, Henry Schmieder Arboretum, the Lutheran Theological Seminary at Philadelphia and Germantown Friends School where he was instrumental in creating the Betty Cary Arboretum.

Steve Donnelly

Steve, Athletic Fields Crew Supervisor, has been working at the Scott Arboretum since 1992.  Steve is a graduate of the Penn State Extension program for arboriculture.

Paul August (Gus) Eriksen

Gus, Garden, joined the staff in 1984.  Other work experience includes Alfred I. DuPont Institute of the Nemours Foundation and Reynold's DuPont estate in Delaware, Kraft Nurseries in Florida and the DuPont Company plant research lab.  Gus holds a Bachelor of Science in Agriculture in Plant Science from the University of Delaware.

William R. Evans, Jr.

Will joined the staff in 1989.  Prior to that he worked at Chessick's Wholesale Greenhouses propagating poinsettias, and Wolff's Farmer's Market in plant sales, orchard pruning and harvesting.

Adam Glas

Adam, Garden Supervisor, joined the staff in 2012.  Prior to that, he worked as Nursery Manager at Terrain at Styler's Nursery in Glen Mills.  He was accepted into the Longwood Gardens Professional Gardener (PG) training program, completing that program in 2006.  He has served as President for the PG Alumni association and Vice President of the Board of Managers at Chenoa Manor.  Adam studied Horticulture and Landscape Design at the University of Wisconsin River Falls.

Charles Hinkle

Chuck, Garden Supervisor, joined the staff full-time in 1998.  Previously, he was a gardener at Friends Hospital in Philadelphia and an instructor at Temple University.    He holds a Bachelors Degree  in Horticulture from Temple University, and has completed Longwood Gardens series I and II in Ornamental Plants.  

Doug Koler

Doug, Gardener, join the staff in 2019.  He hold a Bachelors Degree  in Geography from the University of South Florida.  Before coming to Swarthmore, he worked for the Florida Division of Forestry as a forest ranger, municipal arborist for a suburban community in Colorado, and gardener for the University of Pennsylvania.  He has been an ISA Certified Arborist since 2007 and holds a Certificate in Ornamental Plants from Longwood Gardens.

Susan McGinley

Susan graduated with a Bachelor of Science degree in horticulture from Temple University, Ambler, and a Bachelor of Science degree from Cabrini College in Radnor, PA.  Before joining the horticulture staff at the Scott Arboretum in April 2001, Susan worked as a research biologist, and has gardened at Chanticleer in Wayne, PA, Smith & Hawken in Rosemont, PA, and also worked with Laurie Humphrey's landscape design and maintenance firm in Haverford.  Susan completed an internship at the Tyler Arboretum in Media, PA.

Dale Nemec

Dale, Gardener, has been with the staff since 2004.  Prior to Swarthmore.  He served as Grounds Maintenance Coordinator at Friends Hospital in Philadelphia for 23 years and horticulturalist at Villanova University for a year. In 1999, Dale earned a bachelor's degree in Landscape Architecture as well as an associate's degree in Landscape Design from Temple University.  Dale was born in Philadelphia and currently resides in Roxborough.

Lars Rasmussen

Lars graduated from Temple University, Ambler, with a Bachelor of Science degree in horticulture and has an extensive background in growing greenhouse cut roses. Before becoming a member of the Scott Arboretum's horticultural staff in May 2001, and assistant garden supervisor and plant health in 2018, Lars was employed by Octararo Native Plant Nursery in Kirkwood PA.  and  Landstudies, Inc. in Litiz, PA where his focus was stream bank restoration and wetland installation.  Lars completed an internship at Mt. Cuba Center for the Study of Piedmont Flora in Greenville, DE and he has taken Longwood Gardens certificate classes.

Emily Reuther

Emily Reuther, Assistant Gardener Supervisor/Sustainable Landscapes, joined the staff in 2020. Emily grew up in Delaware County and has worked in horticulture since her teenage years.  She is a graduate of Longwood Gardens Professional Horticulture program, and she has a Bachelor of Science degree in Horticulture from Temple University.  She is co-owner of Five Senses Garden, a design/construction/maintenance gardening business in Bucks County.  Emily has also worked at The Gardens at Mill Fleurs, Love ‘n Fresh Flowers, Tyler Arboretum, North Star Orchard and Redbud Native Plant Nursery.  Emily is the Event Coordinator for the “Today’s Horticulture” Symposium which is held at Longwood Gardens.