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This book tells me how to better care for this and a lot of other striking plants I have grown.
Everything is all in one place in this book, as well as information on other tropicals like cannas, dahlias, tuberous begonias and four o'clocks, that I've tried to store and failed to overwinter.
This book is encouraging me to try again with some of these warm-climate favorites. I'll have a better chance of success, based on this author's knowledge and experience.