randy, your are early today, maybe waiting for me.
The key words I used is the blue and red effect for plant growth. Here is what I found. It's also just for common plant.
1. the effect of red light. Plant pigments absorb red light and control seed germination, bulb formation, root development, dormant periods and the appearance of fruits and flowers. The fruits and flowers are actually triggered by plant hormones that begin the process. But red light alone, or too much red light in the balance, will cause a plant to become spindly, leggy.
2. the effect of blue light. Light from the blue spectrum promotes the production of chlorophyll. A plant bathed in blue light should have strong stems and thick, green leaves. The carotenoids in plants absorb the blue light and control leaf fall. Blue light is responsible for a plant's growth toward the light and even the amount of water retained by the plant.
Here is the conclusion. Red light should be used in conjunction with blue light, which encourages leafy growth and development. When combined, blue and red light can bring about the greatest degree of healthy growth and flowering.