A grafting question ?

Anderson, IN(Zone 6a)

Does grafting a Tomato Scion to a rootstock of Potato or Bittersweet , make a perennial Tomato ?
???

Liberty Hill, TX(Zone 8a)

All tomatoes are short lived perennials. When I lived in SoCal (when it didn't freeze) we had many tomato plants that lived 1-2 years. I think the weather makes them annuals. I've seen peppers referred to as- annuals but botanically they too are perennials. I don't see how the root stock could make the plant not freeze. I haven't heard anything exceptional abt the grafted plants anyway. But there is no harm in trying.

Anderson, IN(Zone 6a)

I was wondering as a lot of "not Hardy Plants " become winter hardy here when grafted . I had seen one (perennial Tomato ) decades ago , Central Ohio ..
Curious still about the Rootstock it was grafted onto ..

And : A BIG THANK YOU 1lisac !!! , for the Black Cherry seeds ,, I finally have some growing .

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