| Luther Burbank crossed Papaver somniferum x P. orientale. The reciprocal cross always failed for him. The hybrids were almost sterile, but were perennial like the pollen parent. They also bloomed over a long season. I've wanted to repeat the cross, but never had the species in bloom at the same time. Here's some details on the origin of the Shirley Poppies and Burbank's Blue Poppy: http://www.bulbnrose.com/Heredity/shirleys.htm |
Here is a link that might be useful: CybeRose