The adult beetles are active between April and September; they fly clumsily (2) and are typically seen in sunny weather. They feed on leaves, fruits, flowers and buds of a range of plants including roses, (hence the common name), and are often perceived as garden pests for this reason (3). The larvae feed on plant roots, and spend the winter hibernating in the soil or inside rotting wood, emerging the following year to pupate. After they emerge as adults they feed for a few weeks, mate and then die (3).