The Fritillaria Imperialis, known as Crown Imperial, has quite different growing conditions, the exact opposite of the Snake's Head Fritillary. F. Imperialis will not tolerate damp conditions, it likes much drier growing conditions with well-drained soil. If planted in a poorly drained soil, Fritillaria Imperialis is prone to the bulbs rotting, which makes dry, well-drained soil essential. This means they are not ideal bulbs for clay soil, although this can be overcome by growing them in containers. Also, The Crown Imperial requires sun to thrive and is not shade tolerant.
It is best planted in September/October and planted deeply about 30 cms and spaced out to a similar distance as the plants become quite large as they mature. The Crown Imperial is also spring flowering and its flower colours are yellow, red and orange. It is easy to grow and requires no real maintenance. The only drawback to growing F. Imperialis is that although it looks very stylish and statuesque, its smell is not great, (some say quite bad!).
Fritillaria Imperialis will produce seed, but it takes a long time, several years, to mature into a bulb which means it maybe better to dead head so as to divert the plant's energy into next years bulb.