Papaver rupifragum 'Double Tangerine Gem' is similar to Papaver atlanticum 'Flore Pleno' . They both bloom the first year from seed, but Papaver rupifragum is more compact.
Sowing Papaver rupifragum 'Double Tangerine Gem' Seeds
Start Papaver rupifragum seeds indoors 8 weeks before the last frost date. Or sow outdoors in late spring. Sow on the surface. Full sun.