Hydroponic vegetables include lettuce, agarwood, water spinach, purple spinach, leaf beet, chicory, water spinach and watercress.

Hydroponic vegetables refer to vegetables cultivated in traditional soil cultivation, in which most of the roots grow in layers of nutrient solution, and only the nutrient solution provides water, nutrients and oxygen. Hydroponic vegetables have a short growth cycle and are rich in essential vitamins and minerals.

Hydroponics is a kind of soilless culture, which belongs to substrate-free culture. Non-substrate cultivation means that the roots of plants grow in nutrient solution or humid air with nutrient solution, but some substrates may be used in seedling raising.