The first time I saw a Casa Blanca Lilly was at my mom's garden. She had quite a patch of asiatic lillies, but they had doubled and tripled into clumps that for her had become unmanageable (wish I had that problem!) so she was planning on taking them all out. It was towards the end of the lily season, and these were the last to bloom. They were huge!! At least for my novice eyes - they were about 4 feet tall, and the very fragrant blooms were about 10".
There are 3 basic groups of lillies: Oriental, Trumpet, and Asiatic, as well as a couple of specialty varieties such as the "orienpet" which is a cross of the orientals and trumpets. The Casa Blanca Lilly is an Oriental Lilly.
Common Name: Oriental Lily
Hardiness Zone: 5-8 S / 5-10 W
Height: 48"
Fragrance: Yes
Exposure: Full or Part Sun
Blooms In: Aug
Spacing: 12"
Ours propagated this year (divided) for the ones that we did not cut - the one we did cut the blooms it only came back as a single stem. The others came back double - with as many as 21 blooms per stem!
They are so so very fragrant! I have them planted in a couple of different spots in the garden, and when they are in bloom their fragrance perfumes the air almost anywhere you walk! They are awesome!