What is growing on epic gardeners?

Welcome back to another episode of the podcast.

Today we're talking about some important concepts that you should be aware of

when it comes to indoor grow lights and growing under artificial

lighting.

So before we go any further, it's super helpful when growing indoors to just understand a few basic concepts about lighting in general.

By understanding these, you'll understand what it takes to grow a plant successfully and what

makes one grow light more suitable for a particular goal than another.

First we're going to cover Spectrum.

All light, both visible and invisible to the human eye

falls somewhere on a spectrum.

The spectrum is measured in nanometers,

which correspond to the wavelength of light.

The particular band of the spectrum that we as gardeners care about or as indoor

growers is the 400 to 700 nanometer range. This range is known as PAR, which stands for photosynthetically active radiation.

As the name suggests, PAR refers to the wavelengths of light that plants can actually use for all the processes related to photosynthesis.

Within this band of light, there are subsections that plants use for specific purposes.

The range of 400 to 490 nanometers is known generally as blue light and that is used by plants primarily during their vegetative

growth phase where they're putting out leaves, stems, nodes, etc.

The range of light between 580 and 700 nanometers known colloquially as orange

red light is used by plants during their flowering and fruiting phase.

You might be wondering, what about the gap between 490 nanometers and 580 nanometers?

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