Neither of them are correct, theyre both quacks. Wrapping plants with burlap
is a waste of time. Not only that, it gets most of its use by people who "only
want evergreens in my yard" so they have something to look at during winter,
then they cover them up with a bunch of ulgy brown burlap for 6 months. all
you need to do is water your plants and then covering them is not necessary.
For the roses, get a rose cone or just mulch heavily arround them.