if given enough water and if it is a canna it will most likely flower in one year, it will reach 5 foot, two years at the most. the flowers are red to yellow to gold, there can be a deep red in some leafs. Pretty, they die back each year leaving a brown stem that can be cut off, and comes back fresh each year there after.
If it is a banna it may start to show rips in the leaf, and keep getting larger mine is a mini banna about 10 foot high, snd the stems got to be 4 to 6 inches diameter before it started to fruit.
Other varities I see are much taller I have seen them at 20 and 15 foot high, (in berkeley) the the clones come up in different ways they will need about 5×5 foot to start but think on giving at least 10×10. keep it warm, I string up non LED Incandesent christmas tree lights and put a plastic sheet over it from oct to feb or march, best kept over 70, in about 3 to 5 years dependent on variety, there will be several clones coming up from the original stem, but then the original stem will start to flower, and the bananas come of this single stem, in bunches about 4 to 15 flowers on each bract( Ithink) The last flower is male all the rest are female and end up being banans. If it dose not get to cold. The fruit cycle is over 9 months in Berkley, the flower set is some what random, if too cold they turn black and drop off, it can take up to a year for fruit to ripen. So if you put over ripe banna into the compost there can be seeds in them, they look some what like grape seeds, The canna seeds are cat claw like dark brown black, and do tend to spread.