Light colour and growth, this may interest you.

I remember when i was at school i did a science experiment do determine plant growth rate under different coloured light (using red, blue, green etc) cellophane. I used bean sprouts to test this on and i cant quite remember the results only that under a certain colour a plant would grow quicker ( cant remember which colour wouldnt be hard to find out).

Do you think this principle work with marijuana, say if you made a cellophane box around a grow light (probs a cfl or low heat emitting) with the colour would the plant grow faster? Is anyone on here knowlegeable on this sort of stuff? I remember that under one light (might have been blue or red
/?) one bean sprout grew remarkably taller and quicker than the others...

blue for veg
red for bud

yeh, does anyone do this?

Biggy said:

yeh, does anyone do this?

Click to expand...

yep its called MH for veg and HPS for flowering

yeh ok.

say if you were growing under cfls, would it be beneficial lets say in veg to somehow cover each globe with blue cellophane, would it increase growth rate?

Its not a grade school science project anymore.

Get familiar with color temperature...rated in degrees Kelvin
outlined here (in one of my favorite posts so far): https://www.rollitup.org/indoor-growing/57336-true-power-lighting.html

6400k bulbs cool white blah blah blah blue spectrum for grow.. red spectrum for flower 4500k blah blah

yeh im not an indoor grower and ive just realised iv read this stuff before, it was just an idea on the top of my head.

thanks for the replies anyway

Hey Big, at least youre thinking.

You had the right idea.

the reflector color isnt going to change the growth, its the spectrum(color)of the LIGHT