 Non-native bees are widespread and can have both positive and negative effects on ecosystems. Some species are intentionally introduced for agricultural purposes while others are accidental introductions from other countries. Non-native bees can compete with native bees for resources, pollinate invasive plants and cause structural damage to buildings. However, some non-native bees can also provide benefits such as pollinating crops and providing opportunities for scientific research. This article was authored by Laura Russo.