stunted Norfolk pine
I've had a Norfolk pine for around 10 or 11 years. Alfie (like the John Denver & the Muppets song!) has only 2 layers of branches currently, and he's less than 2 feet tall. There are a couple of layers that died several years ago and have been cut off. The branches that remain look very healthy. Still, I keep reading that he should be putting out a new set of branches once a year. Alfie has only grown a new set once every few years. He's currently next to a west-facing window (that gets some shade from the house next door). I'm sure that the soil never dries out, and I also don't think I'm overwatering. He's in a 7" pot, and I'm planning to replant soon in a larger one.
What could I be doing wrong that's causing Alfie to not grow as he should? Could the size of the pot be having an effect? I have pictures I could provide if it would be helpful.
Thanks for reading!