It has been over a decade now that this barrel, that functions essentially as a cistern, has produced Victoria seedlings. I haven't added seed to it in years and though it drys out and temperatures here can drop below 40 F in the winter....a few seeds still sprout every year. Which Victoria? Probably V. cruziana, but seed for V. Amazonia and V. 'Longwood Hybrid' were also tossed in there years ago. Once they float pads ( there are a number of them ) I can ID them. I'll link to an article about the barrel and while I am at it, to links for a now quiescent site or two that still are accessible and contain a plethora of info. I realize the photo is not the best....but the sagittate leaf is a give away. The genus Victoria contains some of the earliest angiosperms ( flowering plants ) with fossil records going back to the early Cretaceous ....over 100 million years ago.