Physical interpretation of the difference in drop size distributions of leaf drips among tree species

► Leaf drip DSDs were experimentally measured among nine foliage species. ► Matte broad leaves produced a larger and wider range of DSDs than coated ones. ► Coated needles produced a larger and wider range of DSDs than coated broad leaves. ► Generation of leaf drip DSD was physically estimated through wetting theory. ► The determinants of leaf drip DSD was identified from leaf traits.