Musa Basjoo Banana / Gallon Pot
This Japanese native is hardy to zero when mulched. It will grow to 15 feet tall (less than 10' in a large pot) and grace your northern yard with giant tropical looking banana stems and leaves.
Though its seedy fruit is not palatable the flowers are showy. It needs sun, lots of summer water and lots of nitrogren for rapid growth. After the first fall frost, prune the stems to a foot high and use the leaves for mulch. By each May new growth will be spectacular.