I have a question about nutrients during flowering. I've heard that most people stop using nutrients for the last few weeks of their plant's lives in order to keep the nutrient taste out of the final smoke product. So if flowering usually takes about 2 months should you only use nutes for the first month or something?

Plus how important is it to use a more phosphorus based nutrient during flowering? I used 10-15-10 Shultz every other watering during veg but have not switched to flowering nutes yet as it's hard to find a phosphorus based fertilizer around here.