From: "Boyce Tankersley" <email@example.com> > Hi Kathleen: > > Our experience at CBG strongly suggests that invasiveness is very much a > regional characteristic. For instance in the Chicago area Buckthorn is > invasive but in other regions experiencing a zone 5 climate it is not > Invasiveness is so strange. I had to look up European Buckthorn it's Rhamnus cathartica, and a plant that we are always pleased to see here in Sweden, it's not rare but the sort of plant thats worth a special mention. It was first reported during the 1600's, which means it counts as native. Well well! /Neil PS. Still no chance of any plants in our garden, as it's still covered in a decimeter of snow.