Neat. So, with regards to Alectai's theory, I'll note that Apiary's Potency 14 is not coloured red. Which suggests it's partially to completely wrong, as it implies Apiary's potency is natural.
From there, there's two possibilities I see: Scarlet Maturity did boost then collect Apiary, but since her Potency was already do high, it wasn't affected, or he didn't and the Red is something else.
The first indicates a limit/weakness of the power: he can't boost someone past a certain threshold of power. That leaves the question of where that limit is. Could be that only Apiary is too strong for boost and it's therefore irrelevant, or it could terminate much lower.