I bought this Calla Lily last year at a Lowes garden center. When I walked into the garden center my eyes were immediately drawn to a display of black Calla Lilies that were labeled 'Hot Chocolate' and I picked one up. I'd been purchasing all the black flowers I could find last year for the black and green theme I want to develop in my garden.
I purchased this calla lily rhizome last year because it was suppose to be a brown colored flower. As you can see the color isn't brown and that is a gamble you take when you shop in big box garden centers and when you buy something that isn't blooming. You never really know what you are going to get until it flowers for you and even then you may never be able to put a name to your plant.