I've grown some tropicals from bulbs/corms/tubers before, but I'm planning a more significant tropical vignette with a water feature.

The water feature is small, just some kind of flowering fountain, and I'll be planting Elephant ears, Canna, probably a musa and some other stuff.

Most tropicals like wet feet, or at least damp. I do have a sprinkler system, so it won't dry out. but it is on a slope, and I wondered if anyone preps a tropical bed differently? Especially if there is a slope?

I know you can bury buckets in the ground etc... Is this worth it?

And if you want to suggest great tropicals please do!