That old horticultural dynamic duo, cacti and catalpa, are featured on HomeGrown this week. Ron McKitrick is a cactus afficianado from Washington state with the story on how to create a sharp-looking cactus garden that will thrive here in Kentuckiana. University of Kentucky entomologist Dr. Lee Townsend talks about the ubiquitous catalpa tree, and how and why it produces the worms that both fish and fishermen crave.Find out more: