Some easy to root roses will work this way, but cover them with something. The top of a plastic soda bottle works well.Of course it depends on how hot it is and tends to work better in dappled shade.

I find it just as easy and more successful to:
1. put the cuttings in small pots of soil
2. water well
3. place in large zipper bags
4. blow bag up with air
5. put in sunny window
6. leave 3-4 weeks
7. do not water
8. blow bags back up with air when they get deflated
9. re-pot when you see roots coming out of holes in pots.

I get almost 100% of cuttings to root in this manner. Last spring I rooted about 25 different types of roses and the only one that didn't take was Distant Drums.

Yes that is what I did last year with a small amount of success. I guess my curious mind wants to know:

How LOW can you GO?

When I Lived in Houston it was so humid that I had pretty good success just sticking cuttings in pots of dirt under a shade tree. That is pretty low tech., but your rate of rooting is greatly diminished.

In terms of a low tech to rooting success ratio, I find the zipper bag method to be the best method. In all honesty I think that the zipper bag method fails for some people because they mess with them too much.

A couple of months ago I took nursery pots, filled them with potting soil, took cuttings and put them in the pots. I placed them under the bushes that I took the cuttings from and just kept them watered. It appears that many of them rooted. There were a couple varieties that did not take but the others probably had 75% success. I was not sure that they had rooted but while walking by one of the pots I accidently pulled one of them out of the pot with my clothes. It had definately rooted. I am just waiting for warmer weather before dumping them all out and potting them up into individual pots. I usually using the rooting powder, covering with plastic, in the greenhouse, etc. I did not use any powder or anything on these.
Patsy

This was my first year trying cuttings. I took cuttings in the late summer and early fall. I did use the rooting hormone but then just put one cutting per small nursery container with a soda bottle over it. Most have been in the garage under a grow light but one was left outside in a shady area with an old clear ice bucket over it. It looks amazingly good. I only tried about 6 cuttings and I still have 4 which have nicely rooted. I lost 2 to mildew but believe that was my over zealous watering. I plan to try the large zipper bag method next. It's SO exciting to have a new rose from a cutting!!

Check this out for "LOW"- high tech !

See link below.
"Own Root Cuttings Setup Gallery" with detailed comments and info for each of the 30 images.

Also see my Q&A Page for more info and some answers to frequently asked questions. In addition, there is a link to see the comments for all the images on one page.

Remember, I am propagating minis and Mini-Floras only, in the basement under growing lights "ALL" winter long and my success rate is 99 to 100 percent.

Here a comment by Ram Shoor :
"Brilliantly illustrated. Best illustration seen on the web"

Here is a link that might be useful: Own Root Cuttings Setup Gallery