That depends upon how active the growth of the material is. I've run several batches through since Christmas Eve and have one in now. Results here (USDA zone 10a, zip 91316, so you may look up the weather to determine if it's similar to yours) have been quite good.

You may find my response to the question about whether hard wood prunings from last year's growth are appropriate on this thread. I will probably add a version of it to my blog also. Don't use canes which are already forming leaves. They are very likely, though not guaranteed, to fail for reasons explained at the link below. Of course, due to widely varying conditions of material, genetics of the individual cultivars and just plain old "luck", your mileage will vary. Kim

Here is a link that might be useful: Rose rooting help

Kim, very helpful as always. Thank you!

Thank you, glad to be of service. You're welcome! Kim

Well, looks like I have something to do this weekend. I'm going to use the burrito method even if the leaves are forming. I'll just carefully remove them and continue as planned.