My multi-graft citrus had three little tangelo fruits, but they stopped growing. One of the branches holding the fruit started to die back and the fruit started ripening. The poor tree keeps getting die back followed by a fresh flush of growth and I still don't quite know what's causing it. This is the branch the first fruit was hanging on before it fell.
And here's the sad little tangelo. It's not even the size of a mandarin and still had a flush of green on it, but the elongated neck suggests it was a tangelo and not off the mandarin graft.
Didn't look much better inside and was bitter and inedible. One of these days I'll have a proper edible fruit off of this tree. There are still two other tangelos on it but I don't know if they're going to get any bigger, though hopefully more ripe.
Citrus trees really are picky things when they're young. This one's still only three years old. Maybe one day it wont' be this fussy... maybe one day I'll actually be able to enjoy the fruits of all this fussing!