Hydroponically grown vegetables include lettuce, fungus, water spinach, purple cabbage, leafy beet, endive, watercress, etc. Hydroponic vegetables refer to vegetables where most of the roots grow in layers of nutrient solution, and only water, nutrients, and oxygen are provided by the nutrient solution, which is different from vegetables cultivated in traditional soil cultivation. Hydroponic vegetables have a short growth cycle and are rich in a variety of vitamins and minerals necessary for the human body.

Characteristics of hydroponic vegetables: 1. The root system is mainly composed of milky white capillary roots, which are used to absorb water and nutrients; 2. The root system is adapted to the aquatic environment, and there are some aerial roots on the periphery to absorb oxygen; 3. The growth cycle is short and the product is available early.