Most grocery-store tomatoes are bland, uninteresting, and even sometimes a bit sour.
Home-grown tomatoes have a sweet, complex flavor that you actually want to taste by itself, and not mixed into a salad or sauce.
If you've never grown your own tomatoes, try it! It's seriously easy!
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Plantae/Magnoliophyta/Magnoliopsida/Fabales/Fabaceae/Mimosoideae/Acacia