These data contain the dendrometer band growth of five species of trees at two Forest Global Earth Observatory plots (and environs). ~250 trees at The Smithsonian Environmental Research Institute and Harvard Forest had dendrometer bands installed on them. At each site there were approximately 50 trees of five species: American beech, red maple, black cherry, red oak, and green ash. The data contain the weekly measurements of these trees from 2017-2019 excepting trees that died (a number of ash).