After shovel pruning Schneezwerg for it's susceptibility to blackspot here, I wasn't expecting too much from Henry Hudson but it's been spotless. Only other rugosa that matches it's disease resistance I've come across is Dagmar Hastrup.
I would like to find 3 Henry Hudsons in the United States. I've been through the entire list on the Buy From section and have struck out. Any help would be appreciated.