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Early vegetation development following harvest was evaluated for nine common site types in the southern clay belt of northwestern Quebec. Stocking of broadleaf tree and high shrub stems less than 1 m tall was either stable or declined on all sites over a period of 8 years following harvest, whereas stocking of stems over 1 m displayed increases on all but mesic clay sites. These latter sites had the lowest broadleaf and high shrub stocking but a high cover of raspberry (Rubusidaeus L.), low shrubs, and herbs. Mesic to hydric clays and hydric organic site types had considerably higher cover of ruderal and introduced species than sand and till sites, TWINSPAN indicator species analysis was used to explore phytosociological associations of postharvest vegetation. The distribution of 11 phytosociological groups among the nine site types was analysed using contingency analysis to test the specificity of species …