As sunlight hits the Earth’s atmosphere and makes its way to the surface, portions of its spectrum are more likely to be filtered and scattered than others. On a bright, clear day, sunlight will be evenly distributed enough across the visible wavelengths that it appears white, with all the included colors combining to produce this effect.
As a result, proudly purple light is still seen in many grow rooms the world over. Of course, purple-generating LED systems vary widely with regard to how well designed they are and the features they include. Some of the details that it will normally pay to look into when shopping for a conventional LED grow light setup are:
The Sun’s Light is the Gold Standard for Cannabis
Red and blue light are especially important to cannabis plants and newly germinating cannibis seeds . This fact is directly reflected in the light that narrow-band LED grow systems put out. Being able to easily emphasize certain wavelengths is one of the benefits of LED technology, with some systems going further in this respect than others.
The impressive purple glow that comes from LED systems designed for marijuana seed growing is a mixture of output covering the visible blue and red wavelengths. Cannabis plants need many wavelengths of light to thrive, and well-designed LED grow lights provide suitable amounts of all of them.
As they always did originally, manufacturers most often combine LEDs with desirable, different characteristic wavelengths into assemblies that thereby generate a combined spectrum suitable for growing cannabis plants. A crude way to do this would be to simply add an appropriate LED for each range of wavelengths required, from ultraviolet frequencies down to infrared ones. This is why you see some LED lamps for sale that contain a mixture of many differently set colors.
For the most significant final effect on your dried and cured buds, you want to choose a strain where as many parts of the plant as possible are colorful. So ideally, you want buds where the pistils and calyxes (which make up most of the final color) are both vividly colored. If the leaves and trichomes are also colorful, that will improve the effect even further.
The tendency to turn colors is almost 100% determined by strain/genetics, so you can’t force any plant to produce colorful buds. However, you can purchase seeds of strains that naturally turn vibrant colors, and there are tricks to maximize their genetics and bring out the colors of your buds.
This nug contains several purple calyxes.
This cannabis plant has grown vibrant red and purple leaves.
This Frisian Duck plant was grown outdoors in a greenhouse. More than half of Frisian Duck plants grow bright purple buds!
Blue and Red Light Wavelengths Combined
HIDs shower plants with every wavelength possible, but purple LED lights isolate the specific blue and red wavelengths of light that benefit your plant. This is great for plants because it provides exactly what the plants need to grow and thrive, and it avoids giving them excess light that they’ll waste.
The ratio of red to blue diodes in a grow light will also benefit your plants. Whether you have more red than blue or more blue than red, you’ll get a lighter or darker shade of purple. Each shade has its own benefits, so you’ll want to find the right combination for your grow room.
The Benefits of Purple Light
The California Light Works SolarSystem 1100 LED Grow Light , for example, allows you to change the intensity of the blue, red, and purple wavelengths to dial in the specific lighting your plants need. While the spectrum range may be limited, they still offer what your plants need for vegging and flowering growth.
The leaves of these plants are a darker green color, and they’re much larger in size than those of plants that don’t get enough blue light.
Aside from the multiple blue and red light wavelengths, Advance Spectrum Max LEDs like the S900 Advance Spectrum MAX LED Grow Light Panel also include an isolated infrared diode. This IR diode is great for quality resin production, which gives you richer flavors and scents.
LED grow lights that offer purple lighting can drastically improve the way you grow your plants indoors. You can capitalize on the benefits of purple LED lights with various types of technology. Here, we’ll look at the different ways Advance Spectrum Max, California Light Works, and Kind LED give you their own blends of purple light: