So either Canna or Dwarf Banana, thank you so far. Would a more detailed picture of the leaf or the stem help to further determine what it is? The plant is now about 15 inches high.
There are a few different species of Canna and hundreds of cultivars so you may not be able to narrow it down to an exact name but it's definitely a Canna. Our database has 6 pages full of lovely Canna photos: https://garden.org/plants/brow...
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