Plants use light primarily in the red and blue spectrum. White light contains both red and blue, so plants grow better in white light than in red or green alone. Plants use very little green light. Red light promotes flowering but, used alone, will not sustain the plant.
About this Author
Diane Watkins has been writing since 1984, with experience in newspaper, newsletter and web content. She writes two electronic newsletters and content around the web. Watkins has a Bachelor of Science degree in chemistry from Clemson University. She has taken graduate courses in biochemistry and education.