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As buds progress through to flowering the percentile of the pistil (long yellow hairs) decreases until eventually, all the pistils are brown/orange and no more yellow appears, this is when you can tell a plant is at end of its cycle. A useful way to judge when it's time to start checking trichomes.
@Ultraviolet, it looked a bit pink-ish to me. Some photographers use wavelengths during the shot that bring out certain features. The composite photos made out of different wavelengths are quite pretty.
@NegotiatedBubble, Urm I harvested the main flowers and left a few popcorn nugs at the bottom of the plant then put it back to veg, the bottom pictures are taken under a full spectrum lighting 400-700nm, heavily damaged from UV exposure PH tomfoolery.
An excellent article on Blue.
Many Thanks. Since I started playing with the other colours its nice to see the info getting out there. I'm completely convinced with adding more of the spectrum.
I would love to see a well controlled comparative grow between with and without adding the blue or extra colours using a typical grow light like from Spider Farm or similar as a base.
And thanks for all the links to those papers.
@TheFattyMcCoy, These are some clones from a previous grow, was meant to be a comparison between monster-cropped clones at varying stages of flower but they at this stage are growing equally well I can't tell the difference tbh.