I was pruning what I thought was my overgrown Cara Cara and knocked a few fruit off. Still green but seemingly full size. The fruit were unusually light, and now I see why. This is rootstock fruit! Cuban Shaddock, I assume, as this was a Fourwinds tree from 2014. It looks the remainder of the scion died this year and I didn't notice the rootstock took over.
This is the second rootstock tree I have had produce fruit at a very low node count. The other is some kind of trifoliate orange, I believe C-35.
Should I just toss it? I can't imagine why anybody would want this as a rootstock, and I'm not sure why Fourwinds used it. It seems very vigorous. The UCR description for Cuban Shaddock fruit doesn't sound appealing. This unripe fruit I just ate had a lemon/lime/citron taste.


