In south-central Florida, where longleaf pines (Pinus palustris) and slash pines (Pinus elliottii) co-occur, red-cockaded woodpeckers (RCWs) excavate cavities only in longleaf pines. However, south of the longleaf pine range, in southwest Florida, RCWs excavate cavities in slash pines. These slash pines grow in hydric flatwoods. In south-central Florida, slash and longleaf pines tend to occur in mesic flatwoods. We compared heartwood fungal infection, resin flow rates, and other tree characteristics between hydric slash pines in southwest Florida and mesic slash and longleaf pines in south-central Florida. Hydric slash pines greater than 60 years old were significantly smaller in dbh and tree height and tended to have lower crown-bole ratios than either mesic slash or longleaf pines of similar age. Hydric slash pines had more heartwood rot. Longleaf pines had the greatest resin flow. Resin flow was influenced by crown-bole ratio in both longleaf and slash pines, but the relationship differed by habitat. In hydric habitats peak resin flow was associated with lower crown-bole ratios than in mesic habitats. In both habitats, RCWs excavated cavities in trees with the crown-bole ratios associated with maximum resin flow.