Soil carbon storage in the US Caribbean is influenced by factors like soil properties, climate, and land cover. A study looked at 36 sites with different land cover types and soil series to understand these patterns. Surprisingly, clay content and climate were not strong predictors of soil carbon levels. Instead, the combination of clay and fine silt was linked to higher soil organic carbon. Soil properties were better at predicting carbon storage than climate or land cover. This suggests that factors beyond just soil texture need to be considered for accurate predictions of soil carbon dynamics in tropical regions.