Survival of SSG on boxwood leaves at different temperatures within 24 h after application. Plants were sprayed with SSG cell suspension at 10⁷ to 10⁸ CFU^.ml⁻¹, placed in a growth chamber at 10, 20, 30 C, and sampled at 0, 3, 6, 12, and 24 h when the inoculum was blow-dried. The SSG colony-forming unit (CFU) per leaf was calculated based on colony counts of suspended bacteria from the sampled leaves. Each column is a CFU average from six leaves of four independent experiments. Bars indicate standard errors, and letters on the top of three columns of each time point indicate a significant level at α=0.05 of the difference among the sampling points. The samples with the same letter are not significantly different.