Summary

Overview of small-scale soilless and hydroponic vegetable growing for gardeners, students, and youth. Explains why growing without native soil can help when space is limited, soils are poor or contaminated, or better control of water, nutrients, and pests is needed. Describes common substrates and how nutrients are supplied through water, then compares popular system types such as nutrient film technique (NFT), floating/deep-water culture, vertical towers, and container or bag systems for fruiting crops like tomatoes and cucumbers.