Asiatic Hybrids generally have in their background many different Lilium species which originated from several areas of Asia. They are early bloomers, usually with little or no fragrance, but multiply rapidly. Asiatics have the greatest range of colours, and more variance in flower shape and bloomtime. Orientals were developed from a few species native to Japan. They are heavily scented, have much larger flowers and bloom later than most other types of Lilium.
Oriental bulbs tend to increase in size with taller stems and more blooms each year.
Because they slowly produce multiple bulbs from natural division, lift and divide bulbs every 3 - 5 years or if stems become crowded. They will often take a full season to settle in and may not even emerge the first summer. Once established, some may seed freely into large colonies over a period of many years and butterflies love them. Lilium may be propagated by dividing bulbs in late summer. Replant bulbs immediately.