Tuesday, July 21, 2020 - An historic route running 2,000 miles from Mexico to Canada called The Great Western Trail is being remembered with historical markers all along the way. The route was used to move millions of cattle and horses north in the 1870s to the 1890s. Volunteers have now completed the first phase of the project in North Dakota. Joining us is Darrell Dorgan, project manager. ~~~ History professor Tom Isern shares another Plains Folk essay, “Allen’s Grove.” ~~~ Tonight’s Frontline on PBS explores how the COVID crisis has hit vulnerable immigrants and undocumented workers. Jackie Hendry South Dakota Public Broadcasting interviews filmmaker Daffodil Altan in a conversation from SDPB’s “In The Moment.” ~~~ Horticulturist Ron Smith is here with tips on autumn garden planting, the impact of high temperatures on plant growth, and the last chance for corrective/aesthetic pruning.