Where are you located? Without that info there is no way to say if a greenhouse would work or not.

I haven't yet planted them.
The weather is cold with low humidity.

I haven't yet planted them.
The weather is cold with low humidity.

If you're in a very cold climate there is no way they will survive in a small unheated greenhouse over the winter. You could try and bring them inside under lights but you will have to be very vigilant about keep them evenly moist. Actually if you can set the greenhouse up inside that may keep them both warm and moist enough to root.

I'm not sure plain sand would be good. You need to keep them evenly moist and sand drains too much and too quickly. I usually use seed starter soil. It's very light weight and holds moisture well. Start them in 16 ounce clear plastic drinking cups with a hole punched in the bottom for drainage. That way when they root you will be able to see the roots through the cup without having to disturb the plant. It makes it much easier than guessing if they've rooted or not.

My you tube isn't working,( im searching for a winter rose propogation idea in zone6 b)what is the burrito method,wrapping cuttings in newspaper? If so can some one post detailed instructions PLEASE.

Donna, Do a search on here for the burrito method and several threads will come up that explain it very well.

Donna, begin reading at the linked blog entry below. Read the successive posts after that one through the final post to glean all that has been discovered and shared. I hope it helps. Kim

Here is a link that might be useful: Wrapping Cuttings - Pushing The Rose Envelope