I am wondering if leaving low-wattage Christmas mini-lights constantly on on my Picea glauca 'Conica' for 5 weeks last year could have somehow led to a couple of anomalies that have shown up since. First was that one branch near the top reverted to normal spruce growth (since removed) and now I notice it is developing a double leader. I'm not sure what to do about that. The tree is about 5 feet tall now. This is probably just a coincidence but I can't help wonder if there could be a connection. Any thoughts?