Looks like that poor rose hasn't been pruned for ages - it will be very happy now! You have done a magnificent job and will be rewarded with lots of flowers.I once heard on the radio of a commercial grower that uses a slasher on his roses each year (not to the ground of course but a manageable height) and he claimed that they rewarded him with blooms year after year.
Apparently it is difficult to kill a rose by pruning it....looks like you have done a great job.
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