⟨[X/Fe]⟩-T_C trends for giant stars. GWPs with M_⋆> 1.5 M_⊙ are plotted with purple circles, GWPs less massive than 1.5 M_⊙ in blue triangles. Filled symbols indicate planet hosts. Each planet host subsample is shown against its corresponding comparison subsample with an offset of –0.15 for the sake of clarity. The offset between the sample of giants with M_⋆> 1.5 M_⊙ and less massive giants is –0.75. For guidance, the derived slopes are shown in the plots (units of 10^-5 dex/K). The left panel shows the ⟨[X/Fe]⟩-T_C trends when all elements (volatiles and refractories) are taken into account, whilst the one on the right shows the ⟨[X/Fe]⟩-T_C trends when only refractories are considered.