My goodness. It's been two years since you lovely people gave me such good advice over here and I though I'd post an update. Here's the planted tree now:
Apart from one incident where we went on vacation and it didn't get enough water, it's been doing wonderfully. (That time it dehydrated it started drooping horribly, so we propped the branches up and gave it water until it perked up). It's flowered both years and put on some substantial growth. Two years ago was the best growth (probably because I paid some attention to it and gave it new soil and everything...). Last year was a big stagnant, so I think I should fertilize it this time around.
I've got some all-purpose (4-4-4) fertilizer that I'm going to give it once it starts to wake up from hibernation this spring. I'm still pretty inexperienced in the garden and have never actually fertilized a plant after the initial potting/planting; what's the best way to get a dry fertilizer into the soil for an established tree? Should I mix it with water and pour it around the base of the trunk? Dig up a few inches around the trunk and mix the fertilizer in? Something else?
Thanks!