Planted six rose climbers end of April, we had a late spring...

they are doing fine and starting to show signs of flowering.
except one which did not make it.

We are one hundred miles north east of Toronto Canada
not sure what zone that is since it was all changed here
a few years ago.

Was wondering how do I take care of the rest during the season.
I water them once a week and give them rose food. Is there anything
else I should be doing..
jak