Indoor Tomatoes_Help!

[Eleanor]

I have started growing 9 little Roma tomato plants indoors. They are between 2 and 4 inches tall and are divided in two long windowsill containers. When do I need to transplant them into their own containers? How big will their final container be? Help me please, I love my plants dearly and would hate to see them die just because they are over crowded!

[Kisal]

I believe each plant will require a final container size of around 12 to 14 inches in diameter, at a minimum.

Right now, I think I would put each on in a pot that is 4 inches in diameter.

I've never attempted to grow tomatoes indoors, though. I don't have space to devote to the proper light setup.

[The Helpful Gardener]

When do the indoor tomatoes get to be outdoor tomatoes? Outdoors is part of the eqation here eventually, right?

HG

[Eleanor]

I don't know?! Do they have to go outside? I live in a terribly cold (almost all year) climate, but I know that tomatoes CAN grow outdoors but they just have a super short season. I literally know little to nothing about growing anything. So, I suppose, if they absolutely MUST go outside in order for them to survive, well, I can do that. If this is my one little fantasy world where everything grows forever and tomatoes can live inside, well then I would like that even more.
You see, this project was motivated by a whim and now I can't let go of my tomato plants and I read (god only knows where) that one could potentially grow tomatoes indoors all year round. Is this false?

[Eleanor]

By the way, thank you both very much for your helpful advice!

[Kisal]

Your tomatoes can probably grow indoors, but they need a lot of light and warmth. Can you provide that in your home?

[Eleanor]

Yes, I can. For now it is sunny enough in the house but is the winter I can keep them in a green house. Well, this is wonderful news. Thanks again!