Have you eaten Kumquat before? Kumquat are naturally sour inside. The peel is actually the sweet part, it's meant to be eaten with the peel altogether.

Yeah, Nagami kumquats are definitely sour. Meiwa, on the other hand, tend to be on the sweeter side.

-Tom

Yeah I have eaten them before, but my peels are bitter and only slightly sweet compared to the ones I tried which are the same variety.

Does your kumquat tree have leaves with 3 leaflets Picture please

What kind of kumquat is it?

This is it

try out leaving it on the tree until it falls on its own before eating it.

Are they always that cylindrical?

That thing is a beast! Jumbo kumquat!

No, this one grew to a very large size compared to the rest which I think caused it to look like this.

Have you ever checked the soil ph? An application of minerals might be in order too.

I personally HATE them! They never taste tart on the outside and sweet like candy on the inside or vise versa..Not worth growing for me at all...Letting mines ripen beyond yellow for weeks, to a dark orange color did not help one bit. No matter what stage of the ripening process they are in, just horrible.

Hmm, maybe it's an individual taste, like the broccoli gene? I've always loved them, the sweet/sour taste. And it's definitely sweet peel/sour flesh. My Meiwa does have a sweeter peel than Nagami, and the inside is a little less sour, but it's still sour.

OP, that does look like a Nagami in shape, it's just very large. Your leaves indicate that it could use either more or a better fertilizer. What do you use and how often? Looks like some micro-nutrients are lacking, and the tip browning could be fertilizer salts built up. You may need to flush the soil well a few times.

I have a Nagami at one of my lemon farms; a lot of my workers "say" they like them; but nobody eats them! Is your tree in a clay/terracotta pot? The leaves look like they are lacking in Manganese, which is most commonly associated with cool soil (caused by evaporation thru clay pots).

I like my meiwa, the peel is sweet and the inside is sweetish. Not sure why mine seems sweeter than what others say.

A properly ripened Meiwa has flesh on the sweet side but not like an orange or tangerine.

The plant had been moved 2 times which caused some minimal leaf and fruit fall and you can see that the new leaves are dark green. I don't think it is a taste thing because I tasted Kumquats from the store and they were good which made me buy this. It is also in ground and the soil has minerals, I made sure to add crushed rocks. I also use cow, goat, chicken manures, and some composted vegetables and grass. I am wondering if this happened because it is only about 4 months in ground and has been moved 2 times? It held on to some fruit which taste bitter like soap in the peel.

Yes, that could be the reason. Many kinds of citrus have sub-par fruit until they've grown a few years. It was probably putting most of it's energy into growing roots and then re-growing them after being moved. Moving a plant like that too often can really set it back.

Next year's crop will probably be better. I hope it's now in a good spot, try not to move it again.

Thank you, yeah it is in a very good place now near the entrance of the house for ornamental reasons and it gets enough sun. I hope next year they taste better.