Yeppers, a canna. You can just dig up the rhisomes, knock the dirt off and store it cool, but it will be OK in a pot too. I had a funny story about these tough plants. They can, of course, be grown from seed and one year I had started a run of them in the g'house. After they'd germinated and were potted, I pitched the soil into the compost and it found its way to my vegetable garden eventually. It must have been ten years later, I see this familiar foliage coming up in the rows of tomato plants, and it's a tropicana canna. It's now in a pot, much like your pot, inside a g'house overwintering. BTW canna seed, sometimes called Indian shot is viable for up to a century. We had a large water cistern built into a hill to store spring water overflow, and when the dozer moved the soil to install it, a year later canna were all over the place coming up wild. A couple down the road whose family owned this farm said their mother had cannas in that area in the 1930s. The dormant seeds must have been buried for fifty years before the disturbance of the soil allowed them to germinate.

Aggressive is an understatement! Don't let them seed into your garden, and even if you cut the stems when there is still some flower and the seeds are green, don't put them in the compost. You'll be digging little plants for years.

WOuld second the Blue pics as SpiderWort. We have nice Blue one that blooms early each day & closes up in mid afternoon. [URL=http://good-times.webshots.com/photo/2243144420099263945NWoABC][IMG]http://inlinethumb42.webshots.com/39721/2243144420099263945S425x425Q85.jpg[/IMG][/URL] http://inlinethumb42.webshots.com/39721/2243144420099263945S425x425Q85.jpg

That is not a Coffee plant. It looks like a Shooting Star Clerodendron.