When Should Burning Bush Shrubs Leaf Out in Spring?

I received some bare root burning bush hedge plants, about 25 of them. I planted them in the fall last year, in October. When I first received them from gardendirect.com and planted them they started showing leaves and signs of growth after just a couple weeks. Then as winter came they lost all the leaves and the stems went from green to red. Now it is near the end of March and they are not showing any signs of growth however if I scratch the stem it is still showing green under the bark. Am I just being impatient or should they be out of dormancy by now? I live in northern California.