Natural light is best for plants during all growth phases, but I'll be growing indoors, It's a good idea to have a basic understanding of the light spectrum and how it affects plant growth, in order to choose the best lighting for my indoor gardening needs.
By Photosynthesis. Chlorophyll in the plant converts carbon dioxide into food using light energy. Light quality, quantity and duration. Quantity refers to light's intensity, while duration is the length of time the light is present. Quality of light refers to its wavelength, or color according to some scientists.
Sunlight includes all colors of light. Plants only absorb light in the red and blue wavelengths, so orange, yellow, green, indigo and violet are theoretically are unnecessary.