I picked one of these up late last fall at a garden center that had an unusual fat, tapering trunk. Having never had one before I'm curious about it waking up and beginning to bud. With a lot of the leaves left on it from last year, it's hard to identify the buds swelling. In addition, should the buds also turn green? This is the variety that has red leaves. Thanks in advance for your input. By the way, I'm in zone 5.