Maximum Yield USA 2016 June | Page 80

SHINING A LIGHT ON REFLECTIVE MATERIALS Creating abundance is one definition of gardening, a slight of hand accomplishment that enlists the power of nature to help make plants grow faster and produce better yields. Bringing a garden indoors sheds light on just how important illumination is to this process. Good lighting is critical, and what seems so natural and effortless outdoors can be difficult to duplicate within four walls. Providing supplemental lighting is one of the first concerns of any indoor gardener, whether that involves opening the drapes to shine some light on a houseplant or setting up a large grow tent that will house multiple mature plants. Making lighting choices comes from understanding how plants use specific wavelengths of the light spectrum during different stages of growth (PAR). It also helps to know how to fully utilize the intensity of different 78 Maximum Yield USA  | June 2016 lighting technologies while minimizing potential disadvantages like high energy consumption and heat buildup. Managing Light Multiple factors contribute to the development of an effective strategy for good light management beyond choosing a particular type of lighting technology. One good example is the use of a reflector hood to divert light that would otherwise be wasted illuminating the ceiling. The hood reflects light back down onto the plants where it can increase light efficiency by 40%, or even more if the patterns of reflection overlap across multiple fixtures and reflectors. Reflector hoods aren’t the only options when taking advantage of redirected light energy. Light reflected from a number of locations, not just from one or a series of “Multiple factors contribute to the development of an effective strategy for good light management beyond choosing a particular type of light technology.” overhead fixtures, helps approximate the diffused lighting conditions of an outdoor garden. It’s an over, under, around and through approach to comprehensive, distributed illumination, and one that can remediate problems that arise when using focused light. To get the best use of illumination, indoor gardeners place lights directly above plants and as close as possible