Hydroponic farms & gardens (synonyms: grow houses, greenhouses) are areas where food crops are grown indoors without soil (or with minimal soil). They are often found in bunkers, on space stations, on planetary colonies, or as secret illegal grow operations for illicit drugs. They require grow lights. They may be vertical farms or gardens.

Hydroponic farms and gardens may have automated lighting and watering systems. The lights they use produce a substantial amount of heat.

In science fiction worlds hydroponic gardens may be tended to by harvester robots or watering drones.