Sugarloaf Mountain Orchards


The Maryland Chapter operates two areas of orchards at the base of Sugarloaf Mountain in cooperation with Stronghold, Inc., which owns the mountain. These orchards were started in 1970 with irradiated nuts. The orchards are described as the East Field and the West Field.

East Field – Originally planted in 1970 with an estimated 1000 irradiated seeds. Most have succumbed to chestnut blight and phytophthora. However, some  27 remaining trees have been used as mother trees in our breeding program.  Also, a backcross orchard of BC3 seeds (Manahan 41 x AG247) and an experimental orchard to study hypovirulence were planted in 2007 . However, most of these trees have been killed by the blight, phytophthora or deer.

West Field – Planted in 1971 with 600 second generation irradiated seeds. More than 100 of the original trees or their offspring survive and several have served as mother trees in our breeding program.  Also, a small experimental plot of american/segunii crosses were planted in 2016.  For written directions click here.

7901 Comus Road, Dickerson, Montgomery County

The Propers – Stewards
David Webster – Executive Secretary, Stronghold Inc.

Challenges: Deer, Phytophthora, gall wasps, vines.

West Field Location: 


East Field Location: