Callas grow from corms or rhizomes?

willfrost(8b)February 26, 2010

Hello all,

While reading about calla lilies at various sites on the internet, I've noticed that people keep saying they grow from rhizomes. Personally I feel that what they come from more closely resembles a corm. What's your opinion? If you've got an argument for rhizome over corm, I'd like to hear it.

Thanks in advance,


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vetivert8(NI-NZ zone 9a)

Calla palustris - rhizome
Zantedeschia (aka Calla) - corm The ones with the spotty leaves and coloured flowers.

    Bookmark   February 27, 2010 at 4:25AM
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I disagree :-) Callas are aroids and the root structure of any aroid is a rhizome.

It is sometimes pretty easy to confuse the two terms and they are often used interchangeably. The difference is that corms have a papery tunic - rhizomes do not - and corms reproduce or develop cormlets whereas rhizomes just spread or enlarge. They can be cut or broken into chunks for propagation.

    Bookmark   February 27, 2010 at 10:42AM
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Thanks for the info guys, I appreciate it. Just for clarity, I was referring to Zantedeschia.

    Bookmark   February 27, 2010 at 1:21PM
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