I've been growing a key lime tree in a container for about three years now. First year I had it, I wasn't really into plants and ignored it and left it indoors in the summer, and it didn't do a whole lot. Second year I had it I was very into plants, moved it into a five gallon pot that was maybe a bit too large for it at the time, and set it out in full sun. It filled out pretty nicely.

Anyway, I'm a bit concerned by how potentially large it could get. I'm not sure if it's a dwarf variety or not. Leaf size ranges from about an inch to about three inches. Newer leaves tend to be larger, although I think that could just be a result of lower light in the winter months (also dropped a lot of leaves when I brought it in in September, but gets over it fairly soon) causing the leaves to mutate a bit. It put out a ton of new leaves over the past three weeks its been outside.

Anyway, it is growing fairly slowly, but I mean, it's essentially got a three month growing season, so I can't expect it to grow much faster. In any case, it's about a foot high. It didn't get a lot of height last year -- just a lot of bushiness.

Also, during the summer, I keep it fairly wet, and cut back on watering VERY heavily in the winter. It's done fairly well with this, it seems. I haven't really fed it much, though I imagine I'll need to this year. I haven't had any problems, except for it being sort of picky about light (and moving it closer to a window seemed to help, more or less).