Answer: There are no specific insect or disease problems with Hardenbergia, and the fact that your plant has been established for 10 years makes me suspect that the roots are stressed, probably due to over saturated soils. Hardenbergia needs well draining, slightly acidic soils and it is drought tolerant so soggy soils will certainly stress it. Wait until this spring before doing any pruning. It may replace the lost leaves. If not, prune it down to remove the affected shoots and branches. Healthy roots will send up healthy new shoots. Best wishes with your Hardenbergia!
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