I've seen Australia growing -- a gorgeous, glossy blackblackblack -- but the five rhizomes I bought on line are making bronze-green leaves.
If it helps distinguish it, the rhizomes are fat indica-types with very short internodes.
These are getting direct sun most of the afternoon, and I just discovered their growing medium had completely dried out. So, although I've been watering them with the other plants, the dry medium was not absorbing it.
This would stress the plant, but I don't see how it would cause the color to be so different. Could this be something like Black Knight that the seller misidentified?
Some other canna rhizomes I bought might be diseased, but they were from another source and haven't been near these. Could the lighter color be the result of disease?