The Guardian view on insects: gardeners can help reverse their alarming decline | Editorial

With different planting, and by rejecting insecticides, even small green spaces can promote biodiversity

Gardeners' attitudes to insects, like those of humans in general, are a mixed bag. Butterflies' brief, fluttering lives make them beloved wonders. Bees have long been a source of fascination as well as honey. But the reason why some creepy-crawlies have been classified as pests while others haven't goes beyond appearances. Horticulturalists, like farmers, generally object to insects that eat what they grow.

This hasn't saved the creatures that don't consume crops or garden plants. Habitat loss resulting from urbanisation and deforestation, and pesticide use in agriculture, mean that global insect populations are in steep decline. In the UK, the number of flying insects is estimated - by looking at vehicle number plates - to have fallen by 58.5% between 2004 and 2021. Awareness of the importance of bees and other pollinators has risen in the past decade. But human dependence on insects goes beyond this. They form a crucial part of multiple ecosystems.