Fig. 1

Plot set-up for common garden experiment. a Detailed experimental design. Every plot consisted of five patches: two with six scented qIL plants (black triangles) and two with six unscented qIL plants (white triangles). The big area in the centre contained other Capsella lines to provide pollen for outcrossing (circles-Capsella grandiflora self-compatible line, squares—NILs differing in petal size). b Photo of the common garden experiment from Spring 2017. Each plot was set up like described in 1A. In three plots plants were grown under insect-exclusion (green nets) and in the other three plots insects had access but plants were protected from other wildlife like birds and deer (blue nets)