Some varieties make tomato fruits without seeds. They like to keep some scientist who gave it a two bit name happy and keep the name he devised for fruits without seeds, even though that two bit word for it is only worth a quarter bit... PARTHENOCARPIC ...See? Toldja it was a rwo bit word only worth a quarter bit!
But I guess it keeps some scientists happy to keep inventing silly words where they get to mix up pieces of Latin with pieces of Greek. That reminds me, have they done any recent restorations on the Parthenon?
Every once in a blue moon a regular tomato like Basinga which normally makes a huge almost white tomato with over a hundred seeds each in its tasty green gel pac will make a tomato with no seeds. But chances are your little Butchers will have seeds.
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I won't try to tell your digits to try doing the deed of crossing tomatoes the way my digits do it, but if ya want, try it having 2 kinds of tweezers at the ready, one the angled flat kind designed to pluck 10 nose hairs at a time, and the other kind that are more pointed but blunt designed to help save the inside of your nose by only getting one or two nose hairs at a time. (whew!)
Also, have a nice clean shiny pair of the strongest reading glasses you can find. It's SSSSOOOOOOOOOOOOO much easier when you can see. Make sure all cats are fed and sleeping and there is no bothersome thing on your mind, else ya lose concentration.
Practice removing the petals and the anther cone off all in one piece. Losing some petals is ok, but sometimes that breaks the anther cone. Practice doing that on fully opened flowers...those are the kind that'll be the pollen dads.
Then, practice helping some ALMOST open flowers to open and removing the petals and anther cone. On these, if it breaks up some that's ok. (someone tell the spell check that ok is spelled right. should i spell it ohkae?) These flowers you open and do are gonna leave the female's stigma.
Male tomato flowers kinda like female flower stigmas, and if they are JJUUSST the right size, it'll fit right on nice n snug. The male flower you help do that might even tell you thanks! Just buzz at it like a bee. that means you're welcome in flowerinese.