How do you grow Black Swan poppies?
HOW TO GROW Papaver laciniatum
Depth: Surface sow; requires light to germinate.
Sprout Time: 5-20 days.
Starting Indoors: Sow in pots 6-8 weeks before last frost, cover lightly with vermiculite or a humidity dome and keep at 65-70°F until germination, then at 50-60°F. ...
Starting Outdoors: Recommended.
How long soak poppy seeds before planting?
Some gardeners advocate soaking the seeds in lukewarm water overnight before planting to rehydrate the seeds and give them a head start. Keep the soil moist, not wet. Watch for mold. Keep the temperatures cool.