They lay eggs in late summer on the upper side of sallow leaves, preferring the broad-leaved sallow, Salix caprea, but they will also use the narrow-leaved sallow, Salix atrocinerea, and various species of poplar.
Salix | Salix viminalis | Salix caprea | Salix cinerea | Salix arctica | Salix purpurea | Salix atrocinerea | Salix acutifolia | Salix alba | Salix alaxensis | Salix, Pennsylvania | Salix matsudana | ''Salix fragilis'' in native riparian zone | Salix babylonica |
The larvae feed on various trees and shrubs, including Betula, Salix caprea, Salix phylicifolia, Salix cinerea, Populus tremula, Populus balsamifera, Ribes, Rosa species (including Rosa acicularis, Syringa vulgaris and Lonicera caerulea.
The larvae feed on a wide range of plants, including Betula species (Betula verrucosa, Betula pubescens, Betula nana), Alnus incana, Salix caprea, Salix pentandra, Salix aurita, Salix cinerea, Salix phylicifolia, Populus tremula, Philadelphus coronarius, Rubus idaeus, Filipendula ulmaria, Sorbus aucuparia, Vaccinium uliginosum and Ledum palustre.