I have been growing cherry tomatoes for about four years now. My method is hardly scientific. I throw the bad fruit on the ground and let them germinate the next year.
Last year I got some different varieties which I thought I would add to my veggie patch. I don't know the names of the different varieties. I took four tomato fruits and directly planted them in soil in December. It is now February and I've only had a good level of success with one of them. I have about 30 seedlings which I have since separated. One of the other tomatoes has only grown two seedlings so far and it is nearly the end of summer.
I also had four seeds from a tomato that I ate that dried out on my cutting board. I sowed them and each of them sprouted within about a week into a healthy seedling.
I partially dug up one of the non-sprouting tomatoes and noticed that a lot of the flesh was still around the seeds and quite moist after over a month. I know it's a bit late in the year with autumn starting in March but if I can get any of them to sprout I am considering keeping them indoors over winter to stop the few cold days we get from killing them.
Should I have cut the tomatoes open to let the seeds dry out before sowing them? Do tomato seeds need to completely dry before they will sprout? Do some varieties not grow from seed?