Comment by cenamus
5 days ago
From skimming Wikipedia it seems like most absorption happens in the blue range and a bit less in red, almost nothing inbetween at green. Most LEDs are blue with a phosphor, so you usually get more blue light than the rest already.
But surely there are LEDs optimised for that task (Cannabis grow lights)
There are LEDs optimised for that purpose. Not strictly necessary though.
Someone I know had a very successful indoor cannabis grow using nothing but a cool white outdoor LED panel light from the local hardware store.