Northern NY. Zone 4b.
About 20 feet tall. Multiple trunks. Fruit is black when ripe.
Do you have a picture ?
Hiding boulders with trees and shrubs
HELP! What plants/shrubs/trees for the front of my new house?
Help me turn blah to wow! Need help with layout/arrangement of shrubs, flowers for backyard berm in progress!
Need new tree or shrub
Sorry about the slow posting of pictures...website always gives me a problem.
Yes, looks like it.
So Rhamnus is Buckthorn? And also non-native for my area? I've read can sometimes be invasive? Can the berries be eaten by humans?
Yes, yes, yes and no.
There is a native Rhamnus in NY (alnifolia), but this looks to be the much more common (and non-native) cathartica.
That species epithet gives you a good idea what happens when you eat the berries: it produces a dramatically "cathartic" or purging effect on your gastrointestinal system.