The potato is a crop of high nutritional and economic values. It is the common commercial crop cultivated in various ways including soil cultivation, hydroponics, and aeroponics. No matter in which growing methods, light is an essential factor that affects plant growth and development. You may confuse that potatoes tubers are grown under the soil in open fields, do they really need light? Although the edible tubers produced under the soil, potatoes have leafy plants above the ground. The potato plants do need light to growth. For commercial crop cultivation, potato plantlets grow in vitro without soil is popular. During the cultivation of potatoes, LED grow light can provide the light quality that plants need in certain growing stage. Knowing the effects of LED light spectrum on potatoes enables growers to provide the optimal light spectrum for their plants and improve production as well as reducing electricity bill.