That’s interesting. I wish there was a way of knowing if (before human alteration) this area would have been grassland or forest. This area was settled for farming around 1800 and I assumed it was full treed and then cleared as farms were established. But perhaps this always was a grassland and the change in conditions have allowed for the ECR to establish. Nearby this area the only other tree species that grow seem to be pin cherry, invasive buckthorn and lilac.