Proportions of germinated seeds in three Impatiens species across four localities over five years in March (A) and May (B). The bars depict the average for particular combinations; vertical lines represent the standard error of the mean and horizontal lines denote zero germination. Blue bars depict I. glandulifera (G), yellow I. noli-tangere (N) and those in black I. parviflora (P). Each bar is based on n = 6 bags comprising 50 seeds per bag (six bars is based on n = 4–5 due to lost samples). Note that response variable and error bars are displayed in a logarithmic scale. Seeds were only buried for three years at Potštejn due to seed shortage.