Fast Flowering?

Is it possible that every once in a while a plant that has a normally 9-11 week flower to maturity, matures quicker ie: 7 weeks?
Thanks, as all my SourD has cloudy trichs, while 90% of the hairs are still white.
 
Thanks, for the info. maybe just an occasional superseed as one plant was only 4 weeks into flower when all her hair went purple and slowly lightened up over a 2 week period.
 
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