280~315nm–– This wavelength is already ultraviolet light, which has the function of direct suppressive growth for the growth of various animals, plants and even fungi, and has little impact on morphology and physiological processes. Uv Grow Light, Adjustable Grow Light Hanger , Led Greenhouse Grow Light , Led Grow Light E17 Bulb ,Led Grow Light Parts . Observe which plants are completely in the sun? Which ones are in the shade? When do the plants next to the wall get the sun? From this, you can further find out the growth of the same plant in different places, so that you will have a better understanding of the growing conditions required by the plant. The product will supply to all over the world, such as Europe, America, Australia,Borussia Dortmund, Mexico,Australia, Serbia.Organic farming is an agricultural production system that does not use chemically synthesized fertilizers, pesticides, growth regulators, genetic engineering and ionizing radiation technology in production, but follows the laws of nature and adopts agricultural, physical and biological methods to fertilize the soil, control pests and diseases, and obtain safe organisms and their products.