Why Did My Kumuat Tree Turn Into A Pomelo Tree?

Question

I planted a kumquat tree several years and it fruited for several years and then this year it all but disappeared and a pomelo tree is in its place!

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Answer 1

My first thought was that the rootstalk your Kumquat was grafted onto overtook the scion (Kumquat). I did some research and Kumquats are mostly grown on trifoliate orange tree roots, which doesn't look like the photo. It is possible a bird dropped a pomelo seed next to the Kumquat which grew for years before it was noticed. If it grew from seed, there is no telling what grew. Here is more:

https://www.gardeningknowhow.com/edible/fruits/pomelos/pomelo-tree-care.htm

https://www.gardeningknowhow.com/edible/fruits/kumquat/growing-kumquat-trees.htm

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-9-10-11/zone-9-citrus-trees.htm