I would think that because you put them in the fridge for two weeks you would lose half of them. I wish I knew more about root cuttings, but in that area I am not so great :\ sorry.

Since I am in an area where it rarely gets to 40F maybe 3 or 4 times a year, these trees of the east don't get enough chilling hours as they would in their normal environment so I thought simulating the cold would bring the cambial cells alive when restored to ambient temps common in Southern Cali.
I think it works but I don't really know. They may have sprouted anyway regardless because this tree is a survivor, adaptable to many environments as evidenced by my tree down the hill.

Just realized I'm in the Rose Propagation forum. My apologies. I thought I was in the general propagation area.
If the mod is willing to move this to a more appropriate forum, I would appreciate it. Thanks.