Zantedeschia hardiness
Mary Sue Ittner (Sun, 14 Jun 2009 19:34:52 PDT)

It was interesting reading all the posts about people wanting to grow
Zantedeschia aethiopica. It thrives in coastal Northern California and you
see it in places in the wild where it has escaped. My experience is more
like Giorgio's, no doubt because our climates are similar. It appears in my
garden and I've never planted it so am not sure where comes from. I don't
think that it is dormant long here and the Color Encyclopedia describes it
as more or less evergreen. My garden is bone dry in summer and the water
table is not high.

It's not winter wet that kills it as it gets a lot of winter wet in my
climate. We have seen it in bloom in South Africa in August and September.
Although it is usually found in wet places there, we also saw it in drier
habitats (rocks) and blooming in Namaqualand where there isn't much rain.
It blooms here in March and April and definitely. Since it is so widespread
in South Africa growing in various climates with varying amounts of
rainfall, you'd expect that there would be differences in ones that were
grown from seed depending on where the seed was collected

Mary Sue