Zantedeschia aethiopica 'White Giant'

We first saw this giant calla lily at the California garden of plantsman/garden writer Sonny Garcia and were blown away. Lining the walkway were these giant, green and white speckled-leaved Zantedeschia aethiopica, whose foliage topped out above waist high. Even more amazing were the 6' tall flower stems towering above our heads. The flower is the classic, large, creamy-white cup typical of the species...except Zantedeschia 'White Giant' has been doing some really good steroids. In our garden, we have only been able to muster 4' tall stems, 2' long x 1' wide foliage and 5.5' tall flower spikes, but that's still not bad. Keep in mind the height increases each year as the diameter of the tubers increase.

Zantedeschia aethiopica White Giant | White Giant Calla Lily (plantdelights.com)