Almost half of gardeners do not plan to mow their lawn more than once in May, a survey suggests, as an annual campaign to boost nature in gardens kicks off.

Plantlife’s “No Mow May” campaign urges people to leave the mower in the shed for the month to allow wilder lawns with wildflowers to flourish, helping support bees, butterflies and other wildlife.

The wildlife charity says its message is cutting through, with 46% in a survey of more than 2,000 people with garden lawns saying they will not mow their lawn more than once in May.