Answer: Ipomoea acuminata is hardy to 20-25? F. , has moderate water needs, is very fast growing and is quite disease resistant. If your garden did not receive a hard frost, you've watered regularly, and have not used weed killers in the vicinity of your plant, I'm stumped as to why it would die off. How about taking a sample of both the live and dead plant parts to your local Cooperative Extension office or Master Gardener Clinic, or even a well staffed nursery. Having an opportunity to examine the plant might provide some clues as to what is affecting it. Hope the plant is not completely lost!
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