Mom said it produces purple berries. can I eat it?
Chokecherries usually hang kind of separately from the leaves (compared with Common Buckthorn).
Edit- Taxonomic and other common names added for clarification:
Rhamnus cathartica (buckthorn, common buckthorn or purging buckthorn)
Prunus virginiana (bitter-berry, chokecherry, Virginia bird cherry, and western chokecherry)