I know there are many folks who have had good luck with rooting roses in baggies, but I'm not one of them. The trick with rooting using any method is to keep the environment in your rooting container (in this case, a baggie) moist, but not putrid and swampy. If you have to periodically open the bag to get this to happen, then I guess opening the bag is a good idea. If things appear to be going well with the bag closed, I'd keep it closed.

Rooting is a bit of a trial and error process. Once you hit on a method that works reliably, it makes you feel like Mother Nature herself. When I first started, my luck was awful. A friend told me how she uses milk jugs and soda bottles to root roses, and my life changed as I got reliably better at rooting. I put this method on my web site, so others can get the same feeling of accomplishment. Good luck with your cuttings.

Here is a link that might be useful: Click on How To

Thank you so very much for your response and fantastic pictorial guide to root the cuttings. I think mine are toast- just based on the quality of the cuttings, but will wait and see and I am going to experiment it your way- Thanks again!

You're welcome. If your cuttings are green, there's still hope for roots. If they're black, they're toast.

I have also not had good luck with rooting Roses baggie style . I just might try the milk jug/soda bottle method. Thank you for the alternative.

You might want to read through the Winter Sowing forum on this site for more information. The method uses milk jugs and 2 liter containers to grow seeds, quite interesting stuff. It does work even if planted and left for snow to cover up the containers in the winter. I was just wondering about using milk jugs to propogate cuttings. Sounds like it might just work. Thanks, Luke