A meta-analysis of trait differences between invasive and non-invasive plant species reveals that invasive species consistently exhibit higher values for performance-related traits such as physiology, leaf area allocation, shoot allocation, growth rate, size, and fitness compared to non-invasive species. These differences were significant in both invasive vs. native and invasive vs. non-invasive alien comparisons, but not when comparing invasive species to other invasive species. Trait differences were more pronounced in tropical regions than in temperate regions, and were not influenced by whether the invasive species originated from Europe or the test environment. The study highlights that invasive species have higher values for traits related to performance, suggesting that these traits may be used to predict future plant invasions. The results indicate that invasive species differ from non-invasive species in traits associated with performance, and that these differences are influenced by biogeographical and biological factors. The study also found that trait differences were not significantly affected by the phylogeny of the species, and that growth form and family relationships influenced trait differences. The findings suggest that future research should focus on identifying the traits that directly confer invasiveness and on comparing invasive alien species with non-invasive alien species to better understand the mechanisms of plant invasions. The study concludes that invasive species have higher values for traits related to performance than non-invasive species, and that these traits may be used to predict future plant invasions.A meta-analysis of trait differences between invasive and non-invasive plant species reveals that invasive species consistently exhibit higher values for performance-related traits such as physiology, leaf area allocation, shoot allocation, growth rate, size, and fitness compared to non-invasive species. These differences were significant in both invasive vs. native and invasive vs. non-invasive alien comparisons, but not when comparing invasive species to other invasive species. Trait differences were more pronounced in tropical regions than in temperate regions, and were not influenced by whether the invasive species originated from Europe or the test environment. The study highlights that invasive species have higher values for traits related to performance, suggesting that these traits may be used to predict future plant invasions. The results indicate that invasive species differ from non-invasive species in traits associated with performance, and that these differences are influenced by biogeographical and biological factors. The study also found that trait differences were not significantly affected by the phylogeny of the species, and that growth form and family relationships influenced trait differences. The findings suggest that future research should focus on identifying the traits that directly confer invasiveness and on comparing invasive alien species with non-invasive alien species to better understand the mechanisms of plant invasions. The study concludes that invasive species have higher values for traits related to performance than non-invasive species, and that these traits may be used to predict future plant invasions.