It is probably 4-5 years old now. I didn't plant the seed so I can't be sure. I haven't noticed hairs on any leaves and also noted that the leaves on your seedling differed from my grapefruit (unfortunately, variability even in the same plant adds confusion). Your leaves are more elongate and the petioles on my grapefruit do not overlap the leaves. Heinrich's comments seem to keep minneola in the picture too.

Quote from: Sylvain on October 08, 2017, 04:48:00 AM

> That does not look like grapefruit or pomelo. Looks like some sort of Citron???
Not at all. The leaves of citrons are not articulated!

That occurred to me also.

Thanks for the informations. Let us know when your tree will flower and fruit, it should come soon with your climate 

Mistakes happen. The first plant always produced grapefruit-like leaves. The second Minneola always produced elongated leaves with narrow petioles. I was surprised to see the leaves of the second plant to change to more or less grapefruit-like leaves, this season. I have crushed some leaves. The smell of both plants reminds me on Minneola, rather than grapefruit. Most leaves of Minneola in citrus idtools.org are of the elongated type. However, there is also a leaf shown, with a wide petiole.

It's strange to see that leaf shape is turning from elongated to  grapefruit like.
Where your seeds poly or monoembryonic ?

Ynk88, your seedling has unique shaped leaves. I think it's not a pure pummelo, but some sort of pummelo hybrid. Some pummelo hybrids still have heart-shaped petioles.

This is one of my pummelo x Ponderosa lemon hybrid seedlings. The petioles aren't as big as these on your plant, but some of them overlap the leaf in a similar way.

If yet another combination had happened, a seedling from this cross could have both overlapping petioles and elongated leaves. Then, I think it would be quite similar to yours.
I'm not saying your seedling is exactly a pummelo x Ponderosa, but who knows.

I can't look at your pictures, when I click on them it opens a lot of pages and my internet provider blocks the pages.
But from what I see, they are a bit similar in shape.
If mine is a cross, it should be crossed with citruses you can find in citrus orchards, because the seed came from a fruit from the supermarket. But yes, who knows.

Here are better pictures of one leaf, for the size.

Thanks for the help 
I have also seen this website, but for me, the leaves look more like a Ichang or a Combava.
But the seed came from a fruit from the supermarket, and they don't sell ichang or combava fruits where I live.

I will try to make better pictures of a leaf with a measuring tape this week.

Could you please put a picture of your seedling ?

For me the best way to eat them is by making a jelly.
It's like eating a strawberry flavored cotton candy on a piece of bread.

It's a grafted young tree, but I don't know on what it is grafted and could not tell you how old it is.

Here are the pictures, he's a bit chlorotic.

No idea what it is, but judging by those winged petioles and long thorns, I'd say it's probably not going to turn out something sweet.

You're certainly right. But I'm too curious to see the fruits, if it turns to be something awful, I'll throw it away.

I have a sugar belle seedling about 6 feet tall. I let the seedling grow out until buds were big enough and then grafted to swingle rootstock. Budwood not available even if in Florida, apparently patented. However, seedlings of patented varieties aren't patented as far as I know but are identical. Don't think calling it sugar belle would be OK however. I could say "tastes like sugar belle" I suppose. Put some bearing turkish sugar orange buds on the top while I'm waiting. Why graft? Same reasons as bearing budwood. Faster growth and better root stock. Sugar belle seedling as root stock might be OK but why chance it? In ground for two years and bigger than 3 year trees on flying dragon. Nice big thorns. We will see whose seedling bears first. I handed out several seedlings to who ever would take them. Mine is biggest so far? Sugar belle fruit is very tasty which is why I'm growing it out. So is sumo which I was growing out but stopped when bud wood became available. It is available but I still don't have any. This tree had lots of bark cracking in the 19F freeze, one of the downsides of swingle and carrizo root stocks.

I'm not sure to understand everything you wrote, but your Sugar belle will surely bear first, because it's grafted and in the ground.
We don't have Sugar belle in Europe or never heard of it, but we also have tasty hybrids like Tacle and Mandared.
In Switzerland, with the climate we have, it is better to graft on hardy rootstock, but I never grafted my seedlings, as I'm not sure to be able to do it.

I also thought of a pomelo because of the hairy new growth, but I can't find a picture of a pomelo with petioles that looks like the ones on my tree.

Ok Marcin so here they are.
The first left is from the monoembryonic seed and the two right are from the polyembryonic one.
The one from the left sprouted about two month after sowing, and the two others about the end of June.

I also found some seeds in a triploid hybrid. But it was a Tacle mandarin and not an Oroblanco or Melogold grapefruit.
I found 2 seeds after eating about 25 Tacle   

So I have sown them at beginning of february this year, because I love this hybrid, for me it's the best tasting mandarin I have eaten so far.
The first seed was monoembryonic and the second was polyembryonic.
The monoembryonic seed was a nice big one and the poly was not fully formed.

The plant from the monoembryonic seed is groing much faster than the two plants from the other seed ,and I wonder if it will give something good to taste. I'll have to wait a long time before tasting some fruits, if they survive till there