Maximum Yield USA 2015 April | Page 50

the right light for vegetative growth In any garden, the vegetative stage is the foundation for a successful fruiting or flowering stage. After all, it is during the vegetative stage that the majority of the root mass is created and the plant’s structure (the spacing between branches and overall stem strength) is established. It is also during this stage that many growers use manipulation techniques to shape plants to increase yields. But aside from the various plant manipulation techniques used by growers, there is one other vital component that prepares a vegetative plant for a strong finish: the artificial light source. A garden’s artificial light is the sole energy source for all plant growth. It should come as no surprise that indoor growers spend a lot of time and money perfecting their garden’s lighting. The lighting for the vegetative stage is just as important as the lighting for the fruiting and flowering stage. There are a few different types of lights commonly used by growers for the vegetative stage of growth and each has its own advantages and disadvantages. Here is a closer look at some of these lighting technologies. High Intensity Discharge High intensity discharge (HID) lighting has been, and remains, the most popular choice of lighting for indoor horticulture. HID lighting has been present in the indoor horticulture market since the beginning and for good reason. HID lights work really well for growing plants because they are intense enough to penetrate the plant canopy and grow tall, robust plants. “HID lights work really well for growing plants because they are intense enough to penetrate the plant canopy and grow tall, robust plants.” 48 Maximum Yield USA  |  April 2015