I used to cut off nutes at the last week. I never cut it off 2 weeks out. I used to cut it back as the plants seem to slow down in the last 7-10 days (or there about) and I feel like I am just wasting nutes by continuing to give the higher "flowering" levels. But I have discovered that the "slow down" can vary widely from strain to strain and situation to situation. Plus, I more often than not do my harvest in staggered stages. In doing that I found that the lower buds will fatten up and ripen up significantly if the plants have continued access to nutes. So now I have food available to them pretty much right up to the day that I pull the stumps out of the pots.
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