okay. a client comes in and asks me the following, i have no idea so i am asking you lot.

she received a rainbow rose from a friend.. not from my shop btw... and it lasted a long time, when it finally died, the lady cut of the head and planted the rose stem, it grew into a plant and has now started flowering indoors.
should she plant it outside eventually, after the winter or leave it as an indoor plant.

i said i think outdoors but wasnt too sure. i am sure it is simple, but thought to double check with you all..