Longfellow Arboretum has been awarded a Level I Accreditation through the ArbNet program.
Located in the city of Portland, Maine, the Longfellow Arboretum is set within Payson Park and is the result of collaboration between the Longfellow Garden Club and the City of Portland's Forestry Division. Having a Level 1 Accreditation validates what the Longfellow Garden Club and the City of Portland are trying to accomplish to educate the public on the different varieties of trees and native plants not commonly grown in Maine. The Longfellow Garden Club was established in 1924 and was originally founded to renovate and maintain the Henry Wadsworth Longfellow House garden, located at 487 Congress Street in Portland.
The arboretum was designed as a bicentennial project in 1976 by Richard Churchill, Jr. The original arboretum included eleven trees, representing eleven families and three continents. The collection has expanded to 116 trees, both native and exotic. Members of the Longfellow Garden Club plant a tree or trees on a yearly basis as part of an Arbor Day Ceremony. Several varieties of shrubs including lilac, hydrangea, dogwood, azaleas and rhododendrons are also present on the site. The boundaries of the arboretum are comprised of native oak forest and a small tidal marsh. Soils are silt loam, typical of coastal areas and the plant hardiness zone is 5b. The tree beds are weeded regularly to maintain a neat appearance. The arboretum is free and open to the public.