Bulbs: How and When to Split Cala Lily Bulbs, 3 by cathy166

cathy166 wrote:
Although I have planted what feels like a gazillion zantedeschia bulbs (rhizomes), but have never divided any. My sense tells me to wait till the foliage has died down to dig them to look at the rhizome. They are aroids as are caladiums.

In your zone they cannot overwinter in the ground, so they have to be lifted at some point. A few of mine must be really protected as they come up (and bloom) each year. I have never had any that did not bloom until this year and am still hopeful.

The second photo has been in the ground for four summers. Photo one is a container that will come indoors for the coldest winter weather. I chose to mix callas and caladium in the third photo due to their similarities. They will come indoors for the winter, and I may pull them, but not until the foliage has died down. I generally do not permit callas to flower. The blooms are actually small flowers on the spike.

I am guessing that large, undivided bulbs would be more prolific.
Marcia