re: Non-GMO tomato plants

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By definition, there isn't a plant or animal that humans consume that is not a GMO

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There’s also no evidence that GMO food is harmful to humans in any way.

OP, you’ll have several choices when looking through the tomato plants at the box stores. They will either be hybrid or heirloom, and determinate vs indeterminate.

- A hybrid is created when plant breeders intentionally cross-pollinate two different varieties of a plant, with the outcome being an offspring, or hybrid that contains the best traits of each of the parents.

- Heirlooms are open pollinated and have stable genetics. The seeds from the fruits produced will produce the same plant as the parent plant. If you want to save seeds, you’ll want to grow heirlooms.

- Determinate varieties grow to a fixed mature size and then stop producing. Typically called bush type.

- Indeterminate varieties will continue to grow and produce throughout the growing season. They are called vining type.