Why are plants green?

Why pay for unused light energy?

Green plants are green because they contain a pigment called chlorophyll. Green light is not absorbed but reflected , making the plant appear green. As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum.

Chlorophyll absorbs certain wavelengths of light within the visible light spectrum. There are various types of chlorophyll structures, but plants contain chlorophyll a and b. These two types of chlorophyll differ only slightly, in the composition of a single side chain.

HID Lights = Full Visible Spectrum & Waste

HPS and MH lights are great for blasting plants with light, but what do plants crave? But certain wavelengths of light go used during photosynthesis. But you're charged for energy used to produced the full spectrum. Why do you think your room gets so hot? Why are we still using lighting technology from the 18th Century?

Full Spectrum Control LEDs = Effencient

Spectrum Controlled LEDs focuses the energy used to make light into the most absorbant wavelengths, while producing 50% less heat, compared to HIDs). Rated for 50,000 hours with less than a 10% drop in output, LEDs are for serious, long-term growers.
Source: California Lightworks

Why are plants green?

Which Wavelength for which Growth Phase?

UV Light (10nm-400nm)

In general, UV Light is a very important contributor to plant colors, tastes and aromas. Specifically 385nm, UVB, has been shown in studies to elevate THC levels.

Blue Light (430nm-450nm)

These wavelengths encourage vegetative growth and are essential for seedlings/clones during the vegging, especially when stretching must be reduced or eliminated. Blue Light also stimulates the production of secondary pigments which can enhance colors and is known to stimulate Terpene production.

Green Light (430nm-450nm)

Most green light is reflected off the plant and plays a much smaller role in plant growth. However when combined with blue, red and far-red wavelengths, green light completes a comprehensive light spectrum.

Red light (640nm-680nm)

Red light wavelengths encourage stem growth, flowering and fruit production. The 660nm wavelength exhibits the highest action on red-absorbing phytochrome regulated germination, flowering and other processes.

Far red (730nm)

Although the 730nm wavelength is outside the photosynthetically active range, it can be used at the end of each light cycle to promote flowering in short-day plants. A higher ratio of far-red to red than found in sunlight can trigger the shade stretch response.