The recorded food plants of the European peacock are stinging nettle (Urtica dioica), hop (Humulus lupulus), and the small nettle (Urtica urens) [REF].
The adult butterflies drink nectar from a wide variety of flowering plants, including buddleia, willows, dandelions, wild marjoram, danewort, hemp agrimony, and clover; they also utilize tree sap and rotten fruit.