Why does this plant have a blue tint?

UmFzbXVz
UmFzbXVzstarted grow question 6y ago
I am growing both Green Crack (top left) and its CBD counterpart CBD Crack (top right), both from the same breeder. Both plants have identical environment and feeding schedules.
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Week 5
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Grey_Wolf
Grey_Wolfanswered grow question 6y ago
@UmFzbXVz Hi mate this is called phenotypic expression Looks good I reckon 👍
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