HomeGrown Visits the Louisville ZooSpecial information about horticulture at the Louisville Zoo, and the meaning of the term "ectotherm," is the menu of HomeGrown this week. Bob and Jeneen visit the Zoo in person and speak with Assistant Director Mark Zoeller about horticulture and landscaping in specialized settings. Later they visit with ectotherm curator Bill McMahan at the Herpaquarium to learn about salamanders, reptiles, and amphibians that careful observers might find in their local landscapes.