My Northern Lights Auto went for 102 Days from first 4 True leaves. They're known across the board for having 6-7 week veg before flowering a very long veg so LST can have massive impact. Yours looks 2-3 into bloom so now I'd say 3-4 weeks plus flush but hard to tell from one bud it's easier to gauge from a full plant.
There's a full grow journal of my northern lights as it was my first plant in here. She yielded over 200g with very basic nutrient schedule but the long veg period is synonymous with Northern Lights. Enjoy the fruits of the yield.
Happy Growing Gang
Everyday Growing is a Day Learning
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