Growing oranges in Boston
Bostonians can only dream of plucking navel oranges or grapefruits from a tree in the backyard. But there is one citrus that may survive here, the trifoliate orange (Poncirus trifoliata)
. Many Arboretum accessions of this small, spiny Chinese tree have failed, but two plants from a 1979 accession still survive near the Honeysuckle Collection.
Bulletin of Popular Information, 1932, Volume 6
— Nancy Rose, Editor of Arnoldia