Submitted by Team_Ed t3_y0gfat in askscience
kidnoki t1_irv7cd4 wrote
Reply to comment by Not_Leopard_Seal in Is there an evolutionary reason behind deciduous trees’ vibrant fall colours? by Team_Ed
The colors actually aid in frost and UV protection. In the north as winter comes Carotenoids and anthocyanins will be produced at a higher rate, while reverse biosynthesis occurs revealing the deeper, reds, oranges, blues and purples. At least in cannabis, I can usually play with the final colors, by tweaking temps and also the pH on my feetigation, this can also change the sap and pistil color.
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