hydroponically

/ˌhaɪdrəˈpɑnɪkli/
adverb
  1. In a way that involves growing plants in water with added nutrients, instead of in soil.
    • Hydroponically farmed herbs often have a cleaner taste.
    • The lettuce was grown hydroponically in a greenhouse.
    • They learned how to grow tomatoes hydroponically without any dirt.