Most of the Hevea brasiliensis cultivars have long adopted a limited number of Wickham germplasms as core parents in China, leading to a narrow genetic base. Consequently, systematic evaluation of foreign-introduced Wickham germplasms holds significant value for expanding the genetic diversity of breeding parents. In this study, 82 foreign-introduced H. brasiliensis Wickham germplasms were assessed for stem girth, dry rubber yield, dry rubber content, and tapping panel dryness (TPD) grade. The variation patterns, genetic diversity, and correlation of these traits were analyzed. Meanwhile, comprehensive evaluations were conducted using principal component analysis (PCA) and hierarchical cluster analysis. The results showed that the annual girth increment of tested germplasms increased continuously with stand age, while the coefficient of variation (CV) presented a fluctuating declining trend with increasing stand age..Dry rubber yield exhibited a seasonal variation pattern of “low–rise–fall–rise–slow decline” across the three years. The monthly CV for yield ranged from 44.98% to 122.70% with the highest dispersion observed in the first tapping year (peaking at 122.70% in July 2018) and relatively low variation in the third tapping year (44.98%–49.63% from August to December 2020). Mean dry rubber content remained stable between 34.27% and 34.66% over the three years, with CV values ranging from 3.33% to 6.27%, indicating low phenotypic dispersion. The mean tapping panel dryness (TPD) grade over the two-year period ranged from 2.04 to 2.64, with coefficients of variation (CV) of 45.90%–53.70%, indicating a high degree of phenotypic dispersion. The Shannon-Wiener diversity index (H'') revealed rich genetic diversity within the population, with values ranging from 1.61 to 1.87 for 13-year stem girth, 1.41 to 1.97 for dry rubber yield, and 1.75 to 2.01 for TPD grade. Correlation analysis showed that stem girth exhibited highly significant positive correlations (P < 0.01) between adjacent growth years, and such correlation gradually weakened as standage intervals increased.. The stem girth of 8-year-old H. brasiliensis showed significant positive correlations with dry rubber yield during the second and third tapping years (P?<?0.05). In addition, dry rubber yields across different tapping years presented highly significant positive correlations (P < 0.01), indicating that early yield performance can reliably predict the late-yielding capacity of H. brasiliensis germplasm. Notably, no significant correlations were observed between dry rubber yield and dry rubber content or TPD grade. PCA extracted six principal components with eigenvalues greater than 1, which collectively explained 88.45% of the total phenotypic variation and supported the screening of nine core evaluation indices.Through membership function analysis, eight excellent germplasms with fast-growing, high-yield and low-skinned characteristics were screened out, which were from Sri Lanka ( No.53 Nab25, No.66 Nab20, No.65 RRIC36 ), Côte d ''Ivoire ( No.298 IRCA301, No.300 IRCA307 ), Malaysia ( No.173 RRIM501, No.135 RRIM703 ) and Brazil ( No.169 IAN873 ).These superior resources were characterized by fast growth vigor, high rubber yield, and low TPD occurrence. Hierarchical cluster analysis partitioned the 82 resources into six discrete clusters. The clustering grouping exhibited no obvious correspondence to their geographic origins. Clusters IV and VI constituted the two largest groups, which contained most resources with outstanding comprehensive agronomic performance. This study clarified the early-phase phenotypic genetic characteristics of introduced Wickham germplasm and identifies superior resources that can be utilized as parental materials or advanced directly to breeding trials for prioritized exploitation.