I bought a nandina firepower a few months ago. It still had some fall color on it. I see it in my garden now and I'm worried that I'm not seeing any new bright green growth. Maybe I'm imagining it, but I think there is less green than when I bought it. Maybe all the new growth is hidden under the old stuff. is there any reason it would get fall color in the summer? I'm just wondering if I need to do something or just not worry about it.