Just that it crossed my mind that forsythia, for example, will only flower low down on the plant where it would have been covered by snow in areas where it isn't totally bloom hardy. We tried the Endless Summer hydrangea, one that does the blue or pink thing and is supposed to be hardier than others with that coloration, but it struggled through the first winter and only grew short branches the next year, then it croaked altogether the following winter. The white flowered ones like 'Annabelle' and PeeGee types are perfectly hardy here, however.
