Horticulturist Gerard Lordahl joins us for our final Summer Stuff segment. He’ll tell us how to take care of your plants and how to clean up your storm-damaged gardens. New Yorker staff writer Tad Friend talks about the controversial measures the city of Costa Mesa, California, is taking to close its budget deficit. Filmmakers Katie Galloway and Kelly Duane de la Vega discuss their documentary “Better This World,” about two teenagers who fall under the sway of a charismatic revolutionary. Plus, we’ll find out about the life of America’s legendary defense attorney Clarence Darrow.