So today I got the plant out of the pot to have a look at the situation. The rootball came out really easily. To my surprise it was much smaller than I expected. The earth was packed very tightly around the rootball, so I didn't remove most of it. I saw many very thin hairlike roots and hardly any old, thick, wiry roots. It was also BONE DRY (even though I watered it thoroughly a week ago), so I put it back into the pot and gave it a very thorough soaking (emptied two water cans on it, saw water flowing out from the holes at the bottom). I also saw new top growth emerging. What I'm thinking is that the earth is packed so tightly around the rootball that it wasn't getting enough water even though I was watering it. I'm mulling going back in there tomorrow and loosening all the earth from around the rootball.
