yes you could do a climbing
rose around it,but it may not bloom as well.climbers when the stems 'bend'in an arch form help the
rose produce
flowers.where if it grew stright it would produce few
flowers.
Maybe try a container with
plants that trail.My neighbor had a stump(proably close to your 3 ft)she sat one of her brugmansia pots on it and covered its soil in green wandering jew& portuluca it even trailed to ground and grew around base of trunk& she had a black eyed susan vine
growing through the trunk.
Good luck with your stump project.