Actually i didn't use any poppy dust at all. What i did is put a bag into my backpack and as i dropped the seeds into the bag.. the like seeds stacked.. I did this until i had 72 stacks of seeds (18 x red, blue, plain, yellow). Then what i did is go on top of my house and started growing, for instance all 18 blue seeds, locking down the individual stacks next to the bowl i planted. After my plants have grown i'll then be able to identify the duplicate seeds i'd gotten and then be able to organize and log them into a chest using a book for identification.
My id process.. Chests..
Red Chest (boglings) --book inside chest to identify seeds order in chest (after organized, just drop bogling seeds on chest and it self organizes)
Blue, Plain, Yellow (boglings) chests same as red
Identified chests by color --these chests include seeds that have names attached of all 18 plants each by color. 13 chests in total.
I haven't completed this yet but i'm also trying to do the same thing with peculular seeds that i'm currently collecting.. using the bag stack method and growing just one seed out to identify the seeds and journaling.
All in all i'm hoping to accumulate a seed library.