I'm really starting to get worried about my Usugumo. By this time last year, it was leafing out, and we were cooler, temps-wise, than what we've been so far this spring. When I scratch the bark - bottom, mid-way up, etc - it is green underneath, but I'm not seeing any evidence of budding yet. Normally I keep this one in more shade, but I've been keeping it in the sun in hopes of warming it up and kicking it into gear. Everything else is either fully leafed out, or well on its way. Any thoughts as to what's going on?