Seven F2‐families ofB. pendulaand one origin ofB. platyphyllawere planted as 1‐year‐old seedlings on five experimental fields where the density ofMicrotus‐voleswas extremely high. Susceptibility to vole damage was not related to morphological characteristics of seedlings or seedlots. There were, however, significant differences in resistance among the seedlots tested. Voles were selective in replicates in which the level of damage was very high. The cafeteria tests confirm that voles also clearly select among F2‐families ofB. pendula.