The species is polylectic, in that it prefers to forage upon a wide range of flowering plants species, visiting different flowers blooming in early spring plants: Salix sp. (Salicaceae); Taraxacum officinale, Hieracium (Asteraceae); Lepidium draba, Cardaria draba (Brassicaceae), Viburnum (Adoxaceae); Cerasus, Pyrus communis, Armeniaca vulgaris (Rosaceae); Cerastium (Caryophyllaceae)(Osytshnjuk 1977, Dylewska 1987).
Tomozei & Radchenko (2015) note that E. Scheuchl (pers. comm. 2014) states thatAndrena sericata seems to be oligolectic, in that it prefers to forage upon a narrow range of flowering plant species, primarily on Salix. In Turkey, a huge nest aggregation was observed and females were recorded collecting only on Salix; visits of other plants took place just for self provisioning with nectar. Also, Westrich (1989) analysed the pollen loads of A. sericata and could only find the pollen of Salix. Maybe, if the abundance of Salix is reduced, then the species is able to fall back upon other pollen sources, similarly to Colletes cunicularius.