Insects play a fundamental role in urban biodiversity and in maintaining healthy, functioning green spaces. Although they are often overlooked or perceived as a nuisance, insects are among the most important ecological pillars of modern cities. As urban areas become denser and more built-up, the presence of insects becomes essential for environmental sustainability, resilience, and overall quality of life.

One of the most visible contributions of insects in urban environments is pollination. Bees, butterflies, hoverflies, beetles, and other pollinators enable the reproduction of a wide range of plants, including ornamental flowers, street trees, urban gardens, and native vegetation. Without these insects, plant diversity in cities would decline sharply, triggering cascading effects throughout the urban ecosystem. Pollinators support continuous flowering, healthier vegetation, and greener public spaces that can sustain other forms of urban wildlife.

Beyond pollination, insects play a critical role in maintaining ecosystem balance through natural pest control. Predatory insects such as ladybirds, lacewings, and certain wasps help regulate populations of plant-damaging species, reducing the need for chemical pesticides. This natural regulation is especially important in cities, where excessive chemical use can negatively affect human health, soil quality, water systems, and non-target species. Insects therefore help create safer, more balanced urban green spaces.