So, let we imagine a picture like that: As winter approaches and days become shorter, plants in northern or southern latitudes receive less sunlight. While sunlight provides plants with the full spectrum of light, plants in northern or southern latitudes will receive less sunlight with summer wanes toward winter and the days shorten. As the sun tracks across the sky—or, more accurately, as the planet rotates—obstacles such as trees, telephone poles or other tall objects can block the light periodically.
But with the help of LED grow light, you can control how many hours of light per day your plants receive by the time you leave the LED grow light on. In this way, those living in northern or southern latitudes can assure their plants grow with enough light even when the sun sets early, tricking the plants into believing that it is summertime and that they should continue to grow rather than become dormant or, in the case of annuals, die. In addition, your plants will receive constant direct light for as long as you leave the LED grow lights turned on.
In the best lighting environment created by LED grow light, you plants can grow much faster than under the sunlight, also, you can save a lot of planting area in this way.