Need Help with Calla Lilies

Need to know, when to divide Calla lilies & what time of year (spring or fall).

Thanks,
Honeybee

What I've read says spring. I'm going to divide mine in the spring.

Division is the preferred method of propagation although it will come from seed and stem cuttings. Dividing the large plants in the early spring is as easy as knocking the plant out of its pot and dividing the root bound soil into clumps, each with its stem and clump of root. Replant and stand back because this plant will quickly fill the pot again. http://www.gardening-tips-perennials.com/callalilies.html

Mine is the big plain white one, if that makes a difference. http://plantsdatabase.com/go/768/

Cheri'