80% is just an estimate on my part but in reality peak season is whenever the largest amount of your plants are blooming at one time; it could be a wide range of numbers depending on what bloom time your plants are. It could be 50% to 95% depending on if you have more early bloomers or more mid bloomers etc.. I just kind of eyeball it and if it looks like the majority of mine are in bloom then it's peak season to me.
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