Early BUGS research on 52 Sheffield gardens found an astonishing 159 species of plant in lawns. The average lawn was home to 24 plant species, nearly all of them native. No other garden feature had so many native plants.

So leaving a patch in springtime to grow longer creates an instant wild flower meadow, and a home for yet more small insects (the research also found that long grass was one of the rarest habitats in gardens). If you let the grass and flowers set seed, your local sparrows will thank you. If you leave the long patch over the winter, before cutting it back in early spring), it’ll help many creatures hibernate.