Conventionally-grown fruit: These four-digit numbers run the gamut from guava to kiwi. For example, guava is 4299 and a banana is 4011. You can also search PLU codes online.
Organically-grown fruit: This produce has five digit labels that start with the number 9. An organically-grown banana would be 94011.
Genetically modified food: These five digit labels start with an 8, so a genetically engineered vine ripe tomato would be 84805.
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