Hi!
New here and know nothing about roses.

Last summer, one of the gardeners in my rental went ahead and whacked off a full branch on my personal plant. It only had three to begin with, and there was nothing wrong with it. Now there's only two.

How do I get it to sprout more branches off the base? I've spent the last several months researching this, but I guess I'm typing in the wrong keywords and phrases because I keep getting results for rooting cuttings. Note: Again, because I don't know anything about roses.

Photo is recent and its just been through two storms. New growth is popping up on the other two branches, but no new branches have started.

Thanks!