I got a 2 foot Cara Cara tree about 4 years ago, and it has not grown any taller or fruited. I've read that this type of orange tree is usually a fast grower. After doing nothing in its first location, I moved it a couple of years ago to another location (both in the ground, not a container). I was excited when there were lots of flowers this past spring and the plant looked healthy, but no fruits have developed or increase in height or branching. It gets regular water, full sun, and citrus fertilizer. I have a few other citrus (Kishu mandarin, yuzus, and lemons) which are doing OK, so I'm not sure what the issue is. Any suggestions would be appreciated, as I love Cara Caras!