Grubs in raised beds – how to attract and remove the beetle larvae. Distinguish between harmful and beneficial grubs.
But you can't just kill them because some are protected. Chemical control of beetle larvae is usually unsuccessful. Natural enemies such as martens or hedgehogs are rare in the raised beds. Only birds eat the grubs in the garden. The beetles lay eggs in May and June. In order to prevent or disturb animals, you should regularly loosen the soil. Plants such as delphiniums and garlic act as a deterrent.