"dafla25" wrote in message

If they are volunteers from seed, and the plants were open pollinated,
they won't come true to the variety,

I've always found that the cherry tomatoes are true to type, and also Romas,
and if the Romas aren't true to type, there is no way I can tell the
difference.

but they will probably be just as
good. I had some volunteers one year from a tomato in the garden, and
they were better and larger than the original, and so it usually is with
natural selection. If you harvest seeds from your own tomatoes, year
after year, each year you will get a tomato that will grow better in your
particular conditions. They acclimate more every year, so the seeds that
come up are stronger.

We've been doing that a few years now with Black tomatoes. Dunno if they
were originally Black Russians or Black Crins (??name) but they seem to be
getting better each year as they acclimatise.