Every Thursday evening during the summer, downtown squares in Great Bend and St. John come to life as vendors peddle garden fresh produce.Every Tuesday, Thursday and Saturday mornings, the same thing happens in the Great Bend Public Library parking lot.These farmers markets are among thousands that have sprouted across the country. United States Agriculture Secretary Tom Vilsack wants these efforts to bring home-grown fruits and vegetables to local consumers to be recognized. That is why he has declared Aug. 3-9 National Farmers Market Week.