it took about five days for them to sprout, I had just sprinkled them on the top of the soil and domed them to keep the humidity in. Once they sprout though you gotta watch them when there still sprouts they have a tendency to fall over, so I just pushed the earth around them to support the main stem until there was sufficient root mass. Then when they got a bit bigger I used half a toothpick, after that they had grounded enough to what you see in the first pic....
My temps are rather warm for them, around 81 degrees in the fridge and then around 80 degrees in the tent, I left them in the fridge until they were about an inch high 2" wide and then stuck em under my 600w hps, the papaver veg under 12/12 and flower under 16/8 from what I understand so they are on the opposite cycle as our good friend Mary J. Patience is the key with these guys it took me three tries. In my first attempts they were in the fridge under 24/0 they sprouted great but died after reaching about an inch....too much light was my guess, cause as soon as I put these in the tent under 12/12 they flourished!
But i heard that you may need two seasons before it will flower and be able to harvest from it...I'm still trying to verify this as I'm finding it really hard to find information on this, ill drop a post when I find out!
BTW I planted them Dec 6th, they are around 12" in diameter and 8" high now, this is them, as you can see their under a HPS
This is who their with at the moment, when she's finished I plan on switching the light cycle, although I'm not 100% sure on when is the appropriate time to do this....so i'm just going with the flow, this plant has round 30 days left so that'll be just over 90 days of veg for the papaver.......hope this helped ya, Best of luck man, feel free to ask any other questions, !