@admmad
It's an extreme example, but Matthew Kaskel had trouble getting most daylilies to bloom in Homestead, FL.
He started his program using some select Munson cultivars which would reliably flower for him, and through selection, developed a range which needed no winter rest. If I recall correctly, he was the first hybridizer to run his program on a 9-month bloom cycle, and anything which didn't bloom in one season was discarded.
His climate was tropical, and I think he was at peak bloom in March. Infusing dormant genetics into his lines was problematic. His solution was to have northern growers send plants to him in January/February, plants which had already experienced winter dormancy.
