One thing I learned by accident about tomatoes is I grew a bunch of them once, and my neighbors told me they would give me all the tomatoes I wanted since they grew so many.
So the next season I did nothing, and to my surprise some of the previous year's tomatoe plants reseeded, or grew to fruition in the second year.
I thought tomatoes were a one shot seasonal deal?- Tom
When conditions have been right - like the year I broke my foot and didn’t get every lat thing harvested and didn’t clean up the garden at all that fall, I’ve had tomatoes re-seed themselves here in Zone 4/5.
Always amazing to me, too, as they are basically a ‘tropical’ fruit!
They call them "Volunteers," and we have quite a few, though they do not get too big before the season ends, and due to the short season we usually have lots of green toms at the end, but which can ripen inside for a couple months.
Apart from store bought plants, harvest seeds goes as follows: Plant in April inside, with some grow lights since very little sun comes in where i can do it. Prepare ground and pray and plant in late May, since the ground is not 60F till maybe mid-June. Prop plants up so the often string wind does not break them. Wait a while before weather gets consistently warms and plants get situated and start to really noticeably grow, praise the Lord. Watch as they really take off in July, and start to produce in August-Sept, and we can share the crop, glory to God. See the multitude of green toms wishing they were in Florida as production slows in Oct. and pray the frost delays past that month. Pick them all before that occurs, and place inside to ripen toms up to the next 2 months, thanks be to God. In patience possess ye your toms (and Bttrnt squash).