I let my seeded mothers go all the way to the end and dry the whole plant with the seeds still in the pods.
And how i know when its ready to cut and dry? Starts to die? Or? Sorry im beginner. I keep on same 12/12 timing for light right? Untile end
When all or most of the seed pods are slightly opened... Most all strains will finish in around 60 to 75 days from flowering start.