Can I start cannabis on a window sill then switch to a grow light?

Do that work?

You can, indeed. Here is a general rule when you switch to the grow lights for cannabis:

  • Vegetative phase: 18-24 hours of light per day.
  • Flowering phase: 12 hours of light per day.

MORE: What Is LED Horticulture Lighting?

 

What Others Are Asking

Why Are Plants Green Instead of Black?

I understand that plants in the shrub layer of forests and jungles usually have a darker green color to make up for the fact that they receive less light; but, why don’t they turn completely black to absorb all wavelengths? why are they green?

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