All living organisms have enemies. EU-funded research has harnessed the enemies of banana plants’ enemies for a natural battle in which banana plants, people and the environment are all winners. Population growth and global climate change are putting tremendous pressure on our agricultural food chain, making it even more imperative to protect precious crops from pests and diseases. Banana crops are particularly susceptible, and their protection currently relies on chemical pesticides and fungicides. The EU-funded MUSA project set out to develop more sustainable approaches for banana crops by taking advantage of the microorganisms and insects that act as plant caretakers.