Probably polylectic: Visiting a variety of trees and shrubs. Scheuchl cites Acer sp. (Aceraceae); Salix sp. (Salicaceae) and Crataegus sp. (Rosaceae) as forage sources.
Radchenko (2017), citing others, states: It is probably a polylectic species, visiting trees and bushes, especially found on Prunus (Rosaceae) (Gogala 1999), Rosmarinus officinalis (Lamiaceae) (Blasco-Zumeta 2014) and Acer (Aceraceae) (Friese 1886, Knuth 1908), although it has also been observed on grasses, e.g., on oilseed rape (Brassicaceae) (Le Féon 2010).
Andrena rufula has been noted as a pollinator of orchids through pseudocopulation (Molnár et al. 2011).