Today we talk about blood oranges, cherry plums and related trees, a young tree with a trunk injury, purple flowered trees, and more.

Although not a musician himself, Strachwitz -- who passed away last week at the age of 91 -- had an outsize inflience on the world of roots music through his record company Arhoolie, which has been going strong for over 60 years. Strachwitz championed Norh American vernacular musicians -- playing and singing acoustic blues, Norteno, Zydeco, Cajun, and more -- at a time long before the genre we now call "World Music" came into vogue. This morning we heard from a few of the many great musicians recorded on Arhoolie, including that first release by Mance Lipscomb in 1960.

How do you make sense of what just happened in Davis? Two people stabbed to death in public parks, and a third person seriously injured. The town’s responses included mourning for David Breaux and Karim Abou Najm, vigils, donations to help Kimberlee Guillory recover from her injuries, and fear, followed by a huge sense of relief when Davis police arrested the suspected killer.

And — now what? How do you find perspective? Listening can be a start. Today on Davisville we talk with Susan Cosio, a retired hospital chaplain, ordained pastor and longtime resident of Davis, who has spent most of her adult life helping people navigate crises.

Debbie Shoup of T.R.O.T.R -- which stands for Therapeutic Riding and Off-Track Rehabilitation -- joins us to discuss the Woodland nonprofit and the benefits of therapeutic riding and rehabilitation.

From its website: "T.R.O.T.R. conducts multiple programs for people of all ages with all levels of ability and interest. Riding has proven to be a highly motivational and educational way for students to improve their physical, emotional and social functions, as they gain self-confidence on one of our gentle horses."