I also purchased it. When it had been planted for 1.5 months and it hadn't leafed out, I contacted J&P for a replacement. We dug it up to take a look at the roots...and noticed that all of the roots had "disappeared" except for about 2 roots. We replanted it in a large pot. Within the past month, it has leafed out and has a couple of buds. Nevertheless, we have noticed that a few of the canes are yellowing...

What do yellow canes signify?