Jon-

Although I am no expert on Zantedeschia the only forms that I am aware of
for Z.aethiopica are white and a pale pink called 'Marshmallow'. There are
also two Dutch introductions 'Pink Mist' and 'Red Desire' which I know of
only from photos that are also varying shades of pink with a colored spadix.
I suspect that they are similar and not very different than 'Marshmallow'.
My plants of Z. odorata have a cream/white spathe - but i wouldn't call it
yellow.
I have never seen a true yellow Z.aethiopica and all the yellows come from
Z.elliottiana (recognizable by the black blotch in the throat) or hybrids
created through years of breeding. Calla breeding has come quite a ways with
flowers now available in the full spectrum - with some even having blue
tones visible in the flowers.

Marc
New Jersey USA

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