Answer: Based on your description it sounds like there is a definite problem. Gaura is usually trouble free but it is occasionally subject to infections such as Pythium and Rhizoctonia and this is more likely to occur if it is grown in soil that is overly wet or poorly drained. Overfertilizing, overwatering, or generous mulching can contribute to conditions where these might develop as well. I would suggest you work with your local county extension to obtain a specific diagnosis of the problem and based on knowing that, determine how to proceed. If it is something that can be treated or requires a chemical control, they should be able to tell you what to use and how/when is best to apply it based on local growing conditions. Contact them soon, I hope you can save them.
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