What Color Light Is Best for Plant Growing?

LED grow lights have a variety of spectrum, including red, blue, green, white. Which color is best for my healthy plants?

All colors of light matter, thus there isn’t one that is better than the others. Nevertheless, gardeners may use grow lights that emit more of a single color of light.

For instance, in large commercial applications where they are aiming for specific results and high yields, they alternate between lights that are heavier in either red or blue light depending on where their plants are in the growing cycle. To be exact, in the vegetative phase, plants that receive sufficient blue light will be robust and healthy. On the other hand, in the flowing and fruiting phase, red light is ideal for promoting budding and fruiting
However, for the majority of small-scale, domestic applications, such as those involving houseplants, the ideal grow light should cover the entire PAR spectrum.

MORE: What Is the Best Light Spectrum for Indoor Growing?

What Others Are Asking

How Do I Know My Grow lights Are Harming My Plants?

This is a first-time grower. I received my friend’s old grow lights. They are square panels with bottom-mounted blue and red LEDs. The issue I’m having is that they have absolutely no labels, thus I have no idea how effective they are. How can I tell whether these lights are damaging my plants?

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