'Interspecific Hybrids' (Lilium)
Also called Orienpets or OT Hybrids, these Interspecific crosses between Oriental and Trumpet lilies have produced lily bulbs that easily weather late Midwestern frosts without bud kill, but have the sweet fragrance and shape of Oriental lilies. These improved hybrids have all been trialed under garden conditions, so now you can have solid yellow "Orientals" for late summer, with increased drought-resistence and reliability, something unheard of when we first started business 30 years ago.
Hybridizers are working on increasing the color range of all types of liies. Now we have Orientals crossed with Asiatic lilies (OA), Longiflorum-Oriental crosses (LO) and Longiflorum-Asiatic (LA) hybrids to increase colors and hardiness across the USA.