Haha that's pretty amazing. Well, sucks I have no garden. I might have to give the guy away to a friend.

Yup, sure looks like a tomato. Why not grow it in a pot? I grew tomatoes in pots for years. A shame to get rid of a good tomato plant.

I did put it in a pot now. It's growing quite nice. I just have no garden or even a balcony to keep it past a certain point. I can put it in outside area for summer but that's about it. I'm in UK so it gets fairly chilly for the rest of the year. If I can't keep it I'll try to see if any of my friends will want it. Until it gets too big I'll care for it like for my own : P

It depends on the size of the tomato, I guess. I had a cherry tomato that lived for three years (I live in zone 7). I kept it in a pot and brought it indoors for the winter and back outside when the weather turned warm. I couldn't be bothered taking it when I moved, or it might still be alive. I did the same with a bell pepper, and it just flowered again this spring...its second year.

Have you determined what crossed with your cilantro? At far left in pic posted, it looks as though you have a potato growing, to me. My cilantro is almost 5 ft tall and I am looking forward to seeds, or coriander. Came here to search thyme seed harvesting.. little buggers.. gonna cut while in flowering stage and put in a bag and see what comes out.

Hey, as said above, it's a tomato.

kasia - it is a fun experiment but I don't old out much hope for you getting many or any tomatoes. Your plant is very small and by the time it is big enough to fruit it will be late summer. Although it will be warm enough for it on a windowsill, as we go into autumn it will be too dark for it to thrive. But by all means keep it and see what happens. If you want tomatoes it is best to get a named cultivar seed or plant suitable for pot culture.

Sure I'll keep that in mind. Do they die for winter or do they come back at all?

Here's the progress so far

If you plant them outside, they'll die at the first frost. They won't come back. Tomatoes like hot weather. But if you keep them in a pot you can bring them indoors for winter. I think you'll get tomatoes...I very lazily haven't planted mine yet (New Jersey), but I should still get some by autumn. And if they're not quite ripe you can always pick them before the frost and ripen them in a paper bag.

Outdoor tomatoes in the UK are a big gamble. If the blight doesn't get them the lack of heat and sun probably will. Even in a good year a maximum of three or four trusses of fruit per plant should be expected unless you are growing cherry bush types. Many years I don't get a single tomato from my allotment. In fact this year I am not even bothering with them. They are most reliable in a greenhouse or in a sheltered spot against a sunny wall.

Since you don't know the provenance of your tomato seed it might not even be a variety suitable for our conditions. (If for example it came from an imported fruit.) But do keep it growing and see what happens.