In species trials of Eucalyptus nitens (Deane et Maiden) Maiden, E. globulus Labill, and E. maidenii Labill aged 8 years and 11 years, 10 trees of each species/age were selected to compare wood properties and some lumber properties, ancillary to a previously-reported kraft pulping study. The trees were selected across the range of wood density for destructive sampling to approximate the species mean. Wood properties were measured on breast-height increment cores, on discs removed at 5-m intervals, and on a billet from height 5-6 m, and clearwood mechanical properties were measured from six test sticks/tree, cut from the billet. Eucalyptus maidenii and E. globulus had much higher density than E. nitens. Whole-tree densities averaged, respectively, 574, 540, and 451 kg/m3. There was no pith-to-bark gradient in density in the 6-m-height discs of E. nitens, but E. globulus and E. maidenii showed appreciable commensurate increases in density. In E. nitens, density decreased initially from the base to a height of 6 m, then increased rapidly upwards. Density increased steadily from the base in E. globulus, but decreased in E. maidenii. Bark was thickest in E. maidenii, especially at the tree base, and E. nitens had a higher proportion of heartwood than the other species. Tangential shrinkage, measured in the 6-m disc, was 17% for E. nitens, 12% for E. globulus, and 10% for E. maidenii. Tangential and radial collapse, measured as the reduction in shrinkage by steam reconditioning, was much higher in E. nitens than in E. globulus, which in turn was higher than in E. maidenii. Internal checking (assessed on the 6-m disc) was general and often severe in E. nitens, very occasional in E. globulus, and completely absent in E. maidenii. Average spiral grain angles for all species were less than 2.5Ý, and unlikely to cause drying distortion. Mechanical properties of the three species paralleled their wood densities. MoE values (GPa) for the outer rings 7 to 9 at height 5-6 m averaged 14.4 for E. maidenii, 13.7 for E. globulus, and 9.6 for E. nitens (at about 14% mc). Corresponding MoR values were 131, 122, and 88 MPa. The continued good growth and health of E. maidenii in Northland, combined with its lack of checking, low spiral grain angle, low shrinkage, low collapse, and excellent strength and stiffness, indicate its promise for solid wood products. However, growth-stress-related characteristics in sawn timber, and drying distortion remain to be evaluated.