LEDs offer an attractively cheap, bright and long-lasting option for grow lights. They emit only the wavelengths of lights that correspond to the absorption peaks of a plant's photochemical processes in other ways, their light can be tailored to suit the needs of the plant. This means they consume far less electricity, do not require ballasts and product less unnecessary heat, making them attractive to indoor plant growers. Recent advances in LED grow lights technology allow such bulbs to be produced inexpensively, whilst still providing a bright, long-lasting light source.

The lack of excess heat means they can also be placed closer to the plant canopy without damaging the delicate leaves of the plants in the way that other lights might. The time between watering cycles is also longer as the lower heat stops water from evaporating too quickly.

LED grow lights may use more than one colour to help with the growth of different types of plants; for example, it is often recommended that blue light is best for vegetative growth (with a wavelength of around the mid 400-nms) which for growing fruits or flowers, a greater proportion of deep-red LEDs is considered more effective (with light near 660 nm). With a little research, its possible to customise your grow lights so that they provide the best possible care for your budding plants.