Protecting my rhodadendron

I have a young rhododendron that I put in this summer. I was told it needs to be protected over winter for the first couple of years. I know that this usually involves burlap because it breathes. I don't have any on hand but I do have a number of those woven plastic feedbags. Wondering if I can substitute them for the burlap? Being woven I would think they would breathe somewhat?  Or maybe I just have to go out and buy burlap?

I would suggest watering your bushes then adding three to four inches of wood mulch.  If you don't have wood mulch maybe straw would work.

Burlap is mentioned because it is breathable as you mentioned.  To me, old sheets and such items would be more breathable than feed sacks, especially if they are plastic.

I feel the purpose is to keep frost and snow off the tender leaves.