branches turning brown and dropping off
I have a Norfolk Island Pine that I have loving kept for the last 17 years. It has done well, but over the past 9 months it has lost a lot of branches that are just turning brown and dropping off. It had not been transplanted in several years, so I thought maybe it needed a larger pot. After transplanting I still am seeing more branches turning brown and dropping off. It has been in the same location for all this time and has done well. Can you tell me what might be wrong with the plant? I hate to have it die after all these years.
It is normal for Norfolk Island pine trees to have some browning on the bottom branches. But if the brown branches seem to be high on the plant or if they can be found all over the tree, this is a sign that the plant is either overwatered, underwatered or is not getting enough humidity.