hardiness of Asiatic and Oriental lilies
It seems the Asiatic are much hardier and often the Orientals don't return. Also, the Asiatic are much earlier in coming up and it seems the Orientals just take forever to grow. Do they just need a warmer soil?
I planted the dwarf border ones and wanted them to bloom at the same time (white Asiatic and pink Oriental) but it looks like that isn't going to happen.