Barb we removed thousands of hawthorns, some quite old and large. The seed bank is still active and unfortunately hawthorn is one of the great suckerers - definitely a need to follow up. See my report on woody weeds work 2014 / 15: https://majura.org/the-continuous-struggle-with-woody-weeds/ the majority of blue balloons markers were hawthorns that I removed and gps-ed at the northwest slope - I estimate over the past years we removed around 5000 hawthorns mainly from the northwest slope.