My original thoughts and facts are incorrect on Ipomoea tuberculata.
The plant is an annual and is not a caudiciform. The plants grew well, flowered profusely (though the flowers close before noon), set seed and then the plants sucumbed as annuals normally do.
Ipomoea tuberculata is a pretty plant and would do well in outdoor window boxes where you could enjoy the morning flowers. And this is why they are Morning Glories
