The curious thing is that sun gives most energy near green color so plants evolved to reflect the most energetic part of sun's spectrum.

And nobody knows why.

There’s speculation about this. Plants absorbing green grew too well and then the population collapsed on early earth. The survivors were mutants who didn’t absorb green.

Hence that magenta...

At least they can do the Avatar palette.

The blurple lighting ended up being substandard for growing. Although you need to match the [Chlorophyll absorption spectrum](https://upload.wikimedia.org/wikipedia/commons/f/f6/Chloroph...), it isn't the only thing in a plant that absorbs light, and the proper spectrum is closer to [this](https://supergrowled.com/wp-content/uploads/Plant-Light-Abso...).

The best performing LED grow light designs are essentially conventional full spectrum white light, sometimes boosted with additional far red, not the blurple lights that just make short unusually dense, flavorless plants.

Oh okay, I've heard similar things about netting in nethouses; any colours other than white or black lead to unwanted results (like perhaps desease).

Ahh, right, markdown doesn't work on HN. I tried.