In the past century, agriculture has intensified hugely. Along with this we seem to be seeing a drop in the number of insects in the countryside. Even if you’re driven by purely selfish motives, this is a problem as it means trouble for pollination. One solution is to add wildflowers around the margins, but which wildflowers are most effective? Daniela Warzecha and her colleagues have been researching which flowers attract pollinators in Giessen, Germany.