My norways have been stunted, but they're in really heavy soil.
I planted black spruce along the edge of where the norways are yesterday (5-15 feet from them), and was putting plugs into standing water in spots. Based on the natural cohabitating plant types, I should've planted blacks from the start. Blacks natural cohorts are red maple, paper birch, aspen, bur oak, and black ash; IOW, they fit right in!