Here's the July 29 episode of Horticulture Hangover, our radio broadcast on KLBJ.  Leah reports on her visit to Braken Cave -- the world's largest bat colony! -- summer home to 15-20 million bats, then we talk about multi-trunked red oaks tendency to fall apart, watering trees, dealing with invasive grasses (KR bluestem and Johnsongrass), and the marvelous mistflowers. 

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