Hydroponic garden zone hydroponic garden zone is a hydroponic gardening brand offering a wide range of products that you're sure to enjoy, and they make perfect gifts! all the items in our store are selected by our team and each item is featured with a personal touch.. In this passive hydroponic system, nutrients and water are moved to a plant’s root zone by a wick. plants are suspended in a growing media, such as coconut coir or perlite, and suspended over a reservoir of nutrient solution.. Hydroponic gardening is a technique that was birthed in the seventh century b.c. it’s a method where you can grow plants without soil. instead of soil, the plant’s roots grow in a nutrient-rich solution, giving the plants desired nutrients and oxygen..