Dandelions do not provide the most nutritious pollen for bees.
It is a non-native plant and its yellow flowers have pollen that can attract a few pollinators. One good quality of dandelions is that they bloom early in the season when most other bee lawn flowers aren’t blooming. Of the set of amino acids that bees need, dandelion pollen falls short of four: arginine, isoleucine, leucine and valine. When dandelion pollen was feed to solitary bees larval development was stunted or incomplete. Honeybees can not survive on dandelions alone.