This tree is a bit of a frustration to me because I didn't think it would do very well here, it's fruiting like crazy, the fruit are almost too sour to eat, and it's outgrowing other trees I thought would do well. How come this couldn't happen to me with something like a mandrian??

It's funny you can see a thin area near the top 1/3 of the tree where one season didn't produce many lateral branches. My two-story porch and house is to the right (west) of the tree so it gets shaded after around 4:00 and it only gets partial sun during the day under the pecan tree. I took this photo at noon. Of course the pecan only has leaves probably from April through October, but I'm still amazed this crazy tree is thriving here. Are calamondins unique or should I consider all of the space around this pecan prime citrus real estate?