Tree-canopy coverage and configuration in built-up areas of Hong Kong are the focus of this study. It examines the areal associations of tree-canopy features with landuse and urban-growth history. Tree canopy is classified by geometric criteria of coverage, shape, connectivity, and contiguity. Three main canopy types, each with three variants, are identified: isolated, linear, and connected. The unevenly distributed canopy is predominantly low, scanty, and disconnected. Comprehensive planning is required to modify current patterns. Copyright © 1989 American Geographical Society.