As spring unfolds and plants come to life, gardeners often fight a losing battle against the caterpillars who munch their cabbages.
Traditionally, advice for gardeners regarding caterpillars would be about how to get rid of them and stop unsightly holes in plants. But the Royal Horticultural Society (RHS) and the Wildlife Trusts are asking Britons to take a relaxed attitude to caterpillar carnage in order to support the moths many of them grow into.